path: root/src/ui/dialog/keypair_details/KeyPairSubkeyTab.cpp

/**
 * Copyright (C) 2021-2024 Saturneric <[email protected]>
 *
 * This file is part of GpgFrontend.
 *
 * GpgFrontend 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 3 of the License, or
 * (at your option) any later version.
 *
 * GpgFrontend 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 GpgFrontend. If not, see <https://www.gnu.org/licenses/>.
 *
 * The initial version of the source code is inherited from
 * the gpg4usb project, which is under GPL-3.0-or-later.
 *
 * All the source code of GpgFrontend was modified and released by
 * Saturneric <[email protected]> starting on May 12, 2021.
 *
 * SPDX-License-Identifier: GPL-3.0-or-later
 *
 */

#include "KeyPairSubkeyTab.h"

#include <utility>

#include "core/function/gpg/GpgKeyGetter.h"
#include "core/function/gpg/GpgKeyImportExporter.h"
#include "core/function/gpg/GpgKeyManager.h"
#include "core/function/gpg/GpgKeyOpera.h"
#include "core/utils/CommonUtils.h"
#include "core/utils/GpgUtils.h"
#include "core/utils/IOUtils.h"
#include "ui/UISignalStation.h"
#include "ui/UserInterfaceUtils.h"
#include "ui/dialog/ADSKsPicker.h"
#include "ui/dialog/RevocationOptionsDialog.h"

namespace GpgFrontend::UI {

KeyPairSubkeyTab::KeyPairSubkeyTab(int channel, GpgKeyPtr key, QWidget* parent)
    : QWidget(parent),
      current_gpg_context_channel_(channel),
      key_(std::move(key)) {
  assert(key_ != nullptr);

  create_subkey_list();
  create_subkey_opera_menu();

  list_box_ = new QGroupBox(tr("List of the primary key and subkey(s)"));
  detail_box_ = new QGroupBox(tr("Detail of Selected Primary Key/Subkey"));

  auto* uid_buttons_layout = new QGridLayout();

  auto* add_subkey_button = new QPushButton(tr("New Subkey"));
  auto* add_adsk_button = new QPushButton(tr("Add ADSK(s)"));
  if (!key_->IsPrivateKey() || !key_->IsHasMasterKey()) {
    add_subkey_button->setDisabled(true);
    add_subkey_button->hide();

    add_adsk_button->setDisabled(true);
    add_adsk_button->hide();
  }

  uid_buttons_layout->addWidget(add_subkey_button, 0, 0);
  uid_buttons_layout->addWidget(add_adsk_button, 0, 1);

  auto* base_layout = new QVBoxLayout();

  auto* subkey_list_layout = new QGridLayout();
  subkey_list_layout->addWidget(subkey_list_, 0, 0);
  subkey_list_layout->addLayout(uid_buttons_layout, 1, 0);
  subkey_list_layout->setContentsMargins(0, 10, 0, 0);

  auto* subkey_detail_layout = new QGridLayout();

  subkey_detail_layout->addWidget(new QLabel(tr("Key ID") + ": "), 0, 0);
  subkey_detail_layout->addWidget(new QLabel(tr("Key Type") + ": "), 1, 0);
  subkey_detail_layout->addWidget(new QLabel(tr("Algorithm") + ": "), 2, 0);
  subkey_detail_layout->addWidget(new QLabel(tr("Algorithm Detail") + ": "), 3,
                                  0);
  subkey_detail_layout->addWidget(new QLabel(tr("Key Size") + ": "), 4, 0);
  subkey_detail_layout->addWidget(new QLabel(tr("Usage") + ": "), 5, 0);
  subkey_detail_layout->addWidget(
      new QLabel(tr("Expires On (Local Time)") + ": "), 6, 0);
  subkey_detail_layout->addWidget(
      new QLabel(tr("Create Date (Local Time)") + ": "), 7, 0);
  subkey_detail_layout->addWidget(new QLabel(tr("Existence") + ": "), 8, 0);
  subkey_detail_layout->addWidget(new QLabel(tr("Revoked") + ": "), 9, 0);
  subkey_detail_layout->addWidget(new QLabel(tr("Key in Smart Card") + ": "),
                                  10, 0);
  subkey_detail_layout->addWidget(new QLabel(tr("Fingerprint") + ": "), 11, 0);

  key_type_var_label_ = new QLabel(this);
  key_id_var_label_ = new QLabel(this);
  key_size_var_label_ = new QLabel(this);
  expire_var_label_ = new QLabel(this);
  revoke_var_label_ = new QLabel(this);
  algorithm_var_label_ = new QLabel(this);
  algorithm_detail_var_label_ = new QLabel(this);
  created_var_label_ = new QLabel(this);
  usage_var_label_ = new QLabel(this);
  master_key_exist_var_label_ = new QLabel(this);
  fingerprint_var_label_ = new QLabel(this);
  card_key_label_ = new QLabel(this);

  // make keyid & fingerprint selectable for copy
  key_id_var_label_->setTextInteractionFlags(Qt::TextSelectableByMouse);
  fingerprint_var_label_->setTextInteractionFlags(Qt::TextSelectableByMouse);

  subkey_detail_layout->addWidget(key_id_var_label_, 0, 1, 1, 1);
  subkey_detail_layout->addWidget(key_type_var_label_, 1, 1, 1, 2);
  subkey_detail_layout->addWidget(algorithm_var_label_, 2, 1, 1, 2);
  subkey_detail_layout->addWidget(algorithm_detail_var_label_, 3, 1, 1, 2);
  subkey_detail_layout->addWidget(key_size_var_label_, 4, 1, 1, 2);
  subkey_detail_layout->addWidget(usage_var_label_, 5, 1, 1, 2);
  subkey_detail_layout->addWidget(expire_var_label_, 6, 1, 1, 2);
  subkey_detail_layout->addWidget(created_var_label_, 7, 1, 1, 2);
  subkey_detail_layout->addWidget(master_key_exist_var_label_, 8, 1, 1, 2);
  subkey_detail_layout->addWidget(revoke_var_label_, 9, 1, 1, 2);
  subkey_detail_layout->addWidget(card_key_label_, 10, 1, 1, 2);
  subkey_detail_layout->addWidget(fingerprint_var_label_, 11, 1, 1, 2);

  export_subkey_button_ = new QPushButton(tr("Export Subkey"));
  export_subkey_button_->setFlat(true);
  subkey_detail_layout->addWidget(export_subkey_button_, 0, 2);
  connect(export_subkey_button_, &QPushButton::clicked, this,
          &KeyPairSubkeyTab::slot_export_subkey);

  list_box_->setLayout(subkey_list_layout);
  list_box_->setContentsMargins(0, 12, 0, 0);
  detail_box_->setLayout(subkey_detail_layout);

  base_layout->addWidget(list_box_);
  base_layout->addWidget(detail_box_);
  base_layout->addStretch();

  connect(add_subkey_button, &QPushButton::clicked, this,
          &KeyPairSubkeyTab::slot_add_subkey);
  connect(add_adsk_button, &QPushButton::clicked, this,
          &KeyPairSubkeyTab::slot_add_adsk);
  connect(subkey_list_, &QTableWidget::itemSelectionChanged, this,
          &KeyPairSubkeyTab::slot_refresh_subkey_detail);

  // key database refresh signal
  connect(UISignalStation::GetInstance(),
          &UISignalStation::SignalKeyDatabaseRefreshDone, this,
          &KeyPairSubkeyTab::slot_refresh_key_info);
  connect(UISignalStation::GetInstance(),
          &UISignalStation::SignalKeyDatabaseRefreshDone, this,
          &KeyPairSubkeyTab::slot_refresh_subkey_list);

  base_layout->setContentsMargins(0, 0, 0, 0);

  setLayout(base_layout);
  setAttribute(Qt::WA_DeleteOnClose, true);

  slot_refresh_subkey_list();

  // set up signal
  connect(this, &KeyPairSubkeyTab::SignalKeyDatabaseRefresh,
          UISignalStation::GetInstance(),
          &UISignalStation::SignalKeyDatabaseRefresh);
}

void KeyPairSubkeyTab::create_subkey_list() {
  subkey_list_ = new QTableWidget(this);

  subkey_list_->setColumnCount(5);
  subkey_list_->horizontalHeader()->setSectionResizeMode(
      QHeaderView::ResizeToContents);
  subkey_list_->verticalHeader()->hide();
  subkey_list_->setShowGrid(false);
  subkey_list_->setSelectionBehavior(QAbstractItemView::SelectRows);

  // tableitems not editable
  subkey_list_->setEditTriggers(QAbstractItemView::NoEditTriggers);

  // no focus (rectangle around tableitems)
  // may be it should focus on whole row
  subkey_list_->setFocusPolicy(Qt::NoFocus);
  subkey_list_->setAlternatingRowColors(true);

  QStringList labels;
  labels << tr("Key ID") << tr("Key Type") << tr("Key Size") << tr("Algorithm")
         << tr("Algorithm Detail") << tr("Create Date") << tr("Expire Date");

  subkey_list_->setHorizontalHeaderLabels(labels);
  subkey_list_->horizontalHeader()->setStretchLastSection(true);
}

void KeyPairSubkeyTab::slot_refresh_subkey_list() {
  int row = 0;

  subkey_list_->setSelectionMode(QAbstractItemView::SingleSelection);

  this->buffered_subkeys_.clear();
  for (auto& s_key : key_->SubKeys()) {
    this->buffered_subkeys_.push_back(std::move(s_key));
  }

  subkey_list_->setRowCount(buffered_subkeys_.size());

  for (const auto& s_key : buffered_subkeys_) {
    auto* tmp0 = new QTableWidgetItem(s_key.ID());
    tmp0->setTextAlignment(Qt::AlignCenter);
    subkey_list_->setItem(row, 0, tmp0);

    auto type = s_key.IsHasCertCap() ? tr("Primary Key") : tr("Subkey");
    if (s_key.IsADSK()) type = tr("ADSK");

    auto* tmp1 = new QTableWidgetItem(type);
    tmp1->setTextAlignment(Qt::AlignCenter);
    subkey_list_->setItem(row, 1, tmp1);

    auto* tmp2 = new QTableWidgetItem(QString::number(s_key.KeyLength()));
    tmp2->setTextAlignment(Qt::AlignCenter);
    subkey_list_->setItem(row, 2, tmp2);

    auto* tmp3 = new QTableWidgetItem(s_key.PublicKeyAlgo());
    tmp3->setTextAlignment(Qt::AlignCenter);
    subkey_list_->setItem(row, 3, tmp3);

    auto* tmp4 = new QTableWidgetItem(s_key.Algo());
    tmp4->setTextAlignment(Qt::AlignCenter);
    subkey_list_->setItem(row, 4, tmp4);

    auto* tmp5 = new QTableWidgetItem(QLocale().toString(s_key.CreationTime()));
    tmp5->setTextAlignment(Qt::AlignCenter);
    subkey_list_->setItem(row, 5, tmp5);

    auto* tmp6 =
        new QTableWidgetItem(s_key.ExpirationTime().toSecsSinceEpoch() == 0
                                 ? tr("Never Expire")
                                 : QLocale().toString(s_key.ExpirationTime()));
    tmp6->setTextAlignment(Qt::AlignCenter);
    subkey_list_->setItem(row, 6, tmp6);

    if (row == 0) {
      for (auto i = 0; i < subkey_list_->columnCount(); i++) {
        subkey_list_->item(row, i)->setForeground(QColor(65, 105, 255));
        for (auto i = 0; i < subkey_list_->columnCount(); i++) {
          auto font = subkey_list_->item(row, i)->font();
          font.setBold(true);
          subkey_list_->item(row, i)->setFont(font);
        }
      }
    }

    if (s_key.IsExpired() || s_key.IsRevoked()) {
      for (auto i = 0; i < subkey_list_->columnCount(); i++) {
        auto font = subkey_list_->item(row, i)->font();
        font.setStrikeOut(true);
        subkey_list_->item(row, i)->setFont(font);
      }
    }

    if (!s_key.IsSecretKey()) {
      for (auto i = 0; i < subkey_list_->columnCount(); i++) {
        auto font = subkey_list_->item(row, i)->font();
        font.setWeight(QFont::ExtraLight);
        font.setItalic(true);
        subkey_list_->item(row, i)->setFont(font);
      }
    }

    row++;
  }

  if (subkey_list_->rowCount() > 0) {
    subkey_list_->selectRow(0);
  }
}

void KeyPairSubkeyTab::slot_add_subkey() {
  auto* dialog =
      new SubkeyGenerateDialog(current_gpg_context_channel_, key_, this);
  dialog->show();
}

void KeyPairSubkeyTab::slot_add_adsk() {
  QStringList except_key_ids;
  except_key_ids.append(key_->ID());
  for (const auto& s_key : key_->SubKeys()) {
    except_key_ids.append(s_key.ID());
  }

  auto* dialog = new ADSKsPicker(
      current_gpg_context_channel_,
      [=](const GpgAbstractKey* key) {
        return !except_key_ids.contains(key->ID());
      },
      this);

  connect(dialog, &ADSKsPicker::SignalSubkeyChecked, this,
          [=](const QContainer<GpgSubKey>& s_keys) {
            if (s_keys.isEmpty()) {
              QMessageBox::information(this, tr("No Subkeys Selected"),
                                       tr("Please select at least one s_key."));

              return;
            }

            QContainer<GpgSubKey> err_sub_keys;
            for (const auto& s_key : s_keys) {
              auto [err, data_object] =
                  GpgKeyOpera::GetInstance(current_gpg_context_channel_)
                      .AddADSKSync(key_, s_key);
              if (CheckGpgError(err) == GPG_ERR_NO_ERROR) continue;

              err_sub_keys.append(s_key);
            }

            if (!err_sub_keys.isEmpty()) {
              QStringList failed_info;
              for (const auto& s_key : err_sub_keys) {
                QString key_id = s_key.ID();
                failed_info << tr("Key ID: %1").arg(key_id);
              }

              QString details = failed_info.join("\n\n");

              QMessageBox msg_box(this);
              msg_box.setIcon(QMessageBox::Warning);
              msg_box.setWindowTitle(err_sub_keys.size() == s_keys.size()
                                         ? tr("Failed")
                                         : tr("Partially Failed"));
              msg_box.setText(
                  err_sub_keys.size() == s_keys.size()
                      ? tr("Failed to add all selected subkeys.")
                      : tr("Some subkeys failed to be added as ADSKs."));
              msg_box.setDetailedText(details);
              msg_box.exec();
            }

            emit SignalKeyDatabaseRefresh();
          });
  dialog->show();
}

void KeyPairSubkeyTab::slot_refresh_subkey_detail() {
  const auto& s_key = get_selected_subkey();

  key_id_var_label_->setText(s_key.ID());
  key_size_var_label_->setText(QString::number(s_key.KeyLength()));

  time_t subkey_time_t = s_key.ExpirationTime().toSecsSinceEpoch();

  expire_var_label_->setText(subkey_time_t == 0
                                 ? tr("Never Expires")
                                 : QLocale().toString(s_key.ExpirationTime()));

  if (subkey_time_t != 0 &&
      s_key.ExpirationTime() < QDateTime::currentDateTime()) {
    auto palette_expired = expire_var_label_->palette();
    palette_expired.setColor(expire_var_label_->foregroundRole(), Qt::red);
    expire_var_label_->setPalette(palette_expired);
  } else {
    auto palette_valid = expire_var_label_->palette();
    palette_valid.setColor(expire_var_label_->foregroundRole(), Qt::darkGreen);
    expire_var_label_->setPalette(palette_valid);
  }

  algorithm_var_label_->setText(s_key.PublicKeyAlgo());
  algorithm_detail_var_label_->setText(s_key.Algo());
  created_var_label_->setText(QLocale().toString(s_key.CreationTime()));

  QString buffer;
  QTextStream usage_steam(&buffer);

  usage_var_label_->setText(GetUsagesByAbstractKey(&s_key));

  // Show the situation that secret key not exists.
  master_key_exist_var_label_->setText(s_key.IsSecretKey() ? tr("Exists")
                                                           : tr("Not Exists"));

  // Show the situation if key in a smart card.
  auto smart_card_info = s_key.IsCardKey() ? tr("Yes") : tr("No");
  if (s_key.IsCardKey() && !s_key.SmartCardSerialNumber().isEmpty()) {
    smart_card_info += " ";
    smart_card_info += "(" + s_key.SmartCardSerialNumber() + ")";
  }
  card_key_label_->setText(smart_card_info);

  if (!s_key.IsSecretKey()) {
    auto palette_expired = master_key_exist_var_label_->palette();
    palette_expired.setColor(master_key_exist_var_label_->foregroundRole(),
                             Qt::red);
    master_key_exist_var_label_->setPalette(palette_expired);
  } else {
    auto palette_valid = master_key_exist_var_label_->palette();
    palette_valid.setColor(master_key_exist_var_label_->foregroundRole(),
                           Qt::darkGreen);
    master_key_exist_var_label_->setPalette(palette_valid);
  }

  if (!s_key.IsCardKey()) {
    auto palette_expired = card_key_label_->palette();
    palette_expired.setColor(card_key_label_->foregroundRole(), Qt::red);
    card_key_label_->setPalette(palette_expired);
  } else {
    auto palette_valid = card_key_label_->palette();
    palette_valid.setColor(card_key_label_->foregroundRole(), Qt::darkGreen);
    card_key_label_->setPalette(palette_valid);
  }

  fingerprint_var_label_->setText(BeautifyFingerprint(s_key.Fingerprint()));
  fingerprint_var_label_->setWordWrap(true);  // for x448 and ed448

  export_subkey_button_->setText(s_key.IsHasCertCap() ? tr("Export Primary Key")
                                                      : tr("Export Subkey"));
  export_subkey_button_->setDisabled(
      !key_->IsPrivateKey() || s_key.IsHasCertCap() || !s_key.IsSecretKey());

  key_type_var_label_->setText(s_key.IsHasCertCap() ? tr("Primary Key")
                                                    : tr("Subkey"));

  revoke_var_label_->setText(s_key.IsRevoked() ? tr("Yes") : tr("No"));
  if (!s_key.IsRevoked()) {
    auto palette_expired = revoke_var_label_->palette();
    palette_expired.setColor(revoke_var_label_->foregroundRole(), Qt::red);
    revoke_var_label_->setPalette(palette_expired);
  } else {
    auto palette_valid = revoke_var_label_->palette();
    palette_valid.setColor(revoke_var_label_->foregroundRole(), Qt::darkGreen);
    revoke_var_label_->setPalette(palette_valid);
  }
}

void KeyPairSubkeyTab::create_subkey_opera_menu() {
  subkey_opera_menu_ = new QMenu(this);
  edit_subkey_act_ = new QAction(tr("Edit Expire Date"));
  connect(edit_subkey_act_, &QAction::triggered, this,
          &KeyPairSubkeyTab::slot_edit_subkey);

  export_subkey_act_ = new QAction(tr("Export"));
  connect(export_subkey_act_, &QAction::triggered, this,
          &KeyPairSubkeyTab::slot_export_subkey);

  delete_subkey_act_ = new QAction(tr("Delete"));
  connect(delete_subkey_act_, &QAction::triggered, this,
          &KeyPairSubkeyTab::slot_delete_subkey);

  revoke_subkey_act_ = new QAction(tr("Revoke"));
  connect(revoke_subkey_act_, &QAction::triggered, this,
          &KeyPairSubkeyTab::slot_revoke_subkey);

  subkey_opera_menu_->addAction(export_subkey_act_);
  subkey_opera_menu_->addAction(edit_subkey_act_);
  subkey_opera_menu_->addAction(revoke_subkey_act_);
  subkey_opera_menu_->addAction(delete_subkey_act_);
}

void KeyPairSubkeyTab::slot_edit_subkey() {
  auto* dialog =
      new KeySetExpireDateDialog(current_gpg_context_channel_, key_,
                                 get_selected_subkey().Fingerprint(), this);
  dialog->show();
}

void KeyPairSubkeyTab::contextMenuEvent(QContextMenuEvent* event) {
  // must have primary key before do any actions on subkey
  if (key_->IsHasMasterKey() && !subkey_list_->selectedItems().isEmpty()) {
    const auto& s_key = get_selected_subkey();

    if (s_key.IsHasCertCap()) return;

    export_subkey_act_->setDisabled(!s_key.IsSecretKey());
    edit_subkey_act_->setDisabled(!s_key.IsSecretKey());
    delete_subkey_act_->setDisabled(!s_key.IsSecretKey() && !s_key.IsADSK());
    revoke_subkey_act_->setDisabled((!s_key.IsSecretKey() && !s_key.IsADSK()) ||
                                    s_key.IsRevoked());

    subkey_opera_menu_->exec(event->globalPos());
  }
}

auto KeyPairSubkeyTab::get_selected_subkey() -> const GpgSubKey& {
  int row = 0;

  for (int i = 0; i < subkey_list_->rowCount(); i++) {
    if (subkey_list_->item(row, 0)->isSelected()) break;
    row++;
  }

  return buffered_subkeys_[row];
}

void KeyPairSubkeyTab::slot_refresh_key_info() {
  key_ = GpgKeyGetter::GetInstance(current_gpg_context_channel_)
             .GetKeyPtr(key_->ID());
  assert(key_ != nullptr);
}

void KeyPairSubkeyTab::slot_export_subkey() {
  int ret = QMessageBox::question(
      this, tr("Exporting Subkey"),
      "<h3>" + tr("You are about to export a private s_key.") + "</h3>\n" +
          tr("While subkeys are less critical than the primary key, "
             "they should still be handled with care.") +
          "<br /><br />" +
          tr("Do you want to proceed with exporting this subkey?"),
      QMessageBox::Cancel | QMessageBox::Yes, QMessageBox::Cancel);

  if (ret != QMessageBox::Yes) return;

  const auto& s_key = get_selected_subkey();

  auto [err, gf_buffer] =
      GpgKeyImportExporter::GetInstance(current_gpg_context_channel_)
          .ExportSubkey(s_key.Fingerprint(), true);

  if (CheckGpgError(err) != GPG_ERR_NO_ERROR) {
    CommonUtils::RaiseMessageBox(this, err);
    return;
  }

  // generate a file name
#if defined(_WIN32) || defined(WIN32)
  auto file_string =
      key_->Name() + "[" + key_->Email() + "](" + s_key.ID() + ")_s_key.asc";
#else
  auto file_string =
      key_->Name() + "<" + key_->Email() + ">(" + s_key.ID() + ")_s_key.asc";
#endif
  std::replace(file_string.begin(), file_string.end(), ' ', '_');

  auto file_name = QFileDialog::getSaveFileName(
      this, tr("Export Key To File"), file_string,
      tr("Key Files") + " (*.asc *.txt);;All Files (*)");

  if (file_name.isEmpty()) return;

  if (!WriteFileGFBuffer(file_name, gf_buffer)) {
    QMessageBox::critical(this, tr("Export Error"),
                          tr("Couldn't open %1 for writing").arg(file_name));
    return;
  }
}

void KeyPairSubkeyTab::slot_delete_subkey() {
  const auto& s_key = get_selected_subkey();

  QString message = tr("<h3>You are about to delete the subkey:</h3><br />"
                       "<b>KeyID:</b> %1<br /><br />"
                       "This action is irreversible. Please confirm.")
                        .arg(s_key.ID());

  int ret = QMessageBox::warning(
      this, tr("Delete Subkey Confirmation"), message,
      QMessageBox::Cancel | QMessageBox::Yes, QMessageBox::Cancel);

  if (ret != QMessageBox::Yes) return;

  int index = 0;
  for (const auto& sk : key_->SubKeys()) {
    if (sk.Fingerprint() == s_key.Fingerprint()) {
      break;
    }
    index++;
  }

  if (index == 0) {
    QMessageBox::critical(
        this, tr("Illegal Operation"),
        tr("Cannot delete the primary key or an invalid s_key."));
    return;
  }

  auto res = GpgKeyManager::GetInstance(current_gpg_context_channel_)
                 .DeleteSubkey(key_, index);

  if (!res) {
    QMessageBox::critical(this, tr("Operation Failed"),
                          tr("The selected subkey could not be deleted. "
                             "Please check your permissions or try again."));
    return;
  }

  QMessageBox::information(
      this, tr("Operation Successful"),
      tr("The subkey with KeyID %1 has been successfully deleted.")
          .arg(s_key.ID()));

  emit SignalKeyDatabaseRefresh();
}

void KeyPairSubkeyTab::slot_revoke_subkey() {
  const auto& s_key = get_selected_subkey();

  QString message = tr("<h3>Revoke Subkey Confirmation</h3><br />"
                       "<b>KeyID:</b> %1<br /><br />"
                       "Revoking a subkey will make it permanently unusable. "
                       "This action is <b>irreversible</b>.<br />"
                       "Are you sure you want to revoke this subkey?")
                        .arg(s_key.ID());

  int ret = QMessageBox::warning(this, tr("Revoke Subkey"), message,
                                 QMessageBox::Cancel | QMessageBox::Yes,
                                 QMessageBox::Cancel);

  if (ret != QMessageBox::Yes) return;

  int index = 0;
  for (const auto& sk : key_->SubKeys()) {
    if (sk.Fingerprint() == s_key.Fingerprint()) {
      break;
    }
    index++;
  }

  if (index == 0) {
    QMessageBox::critical(
        this, tr("Illegal Operation"),
        tr("Cannot revoke the primary key or an invalid s_key."));
    return;
  }

  QStringList codes;
  codes << tr("0 -> No Reason.") << tr("1 -> This key is no more safe.")
        << tr("2 -> Key is outdated.") << tr("3 -> Key is no longer used");
  auto* revocation_options_dialog = new RevocationOptionsDialog(codes, this);

  connect(revocation_options_dialog,
          &RevocationOptionsDialog::SignalRevokeOptionAccepted, this,
          [key = key_, index, channel = current_gpg_context_channel_, this](
              int code, const QString& text) {
            auto res = GpgKeyManager::GetInstance(channel).RevokeSubkey(
                key, index, code, text);
            if (!res) {
              QMessageBox::critical(
                  nullptr, tr("Revocation Failed"),
                  tr("Failed to revoke the s_key. Please try again."));
            } else {
              QMessageBox::information(
                  nullptr, tr("Revocation Successful"),
                  tr("The subkey has been successfully revoked."));
              emit SignalKeyDatabaseRefresh();
            }
          });

  revocation_options_dialog->show();
}
}  // namespace GpgFrontend::UI