feat: add key server sync module

src/CMakeLists.txt

@@ -29,3 +29,4 @@ add_subdirectory(m_ver_check)
 add_subdirectory(m_gpg_info)
 add_subdirectory(m_pinentry)
 add_subdirectory(m_paper_key)
+add_subdirectory(m_key_server_sync)

src/m_key_server_sync/CMakeLists.txt

@@ -0,0 +1,46 @@
+# Copyright (C) 2021-2024 Saturneric <eric@bktus.com>
+#
+# 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 <eric@bktus.com> starting on May 12, 2021.
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# com.bktus.gpgfrontend.module.integrated.gnupg_info_gathering
+
+set(INTEGRATED_MODULE_SOURCE "")
+aux_source_directory(. INTEGRATED_MODULE_SOURCE)
+
+# define libgpgfrontend_module
+add_library(mod_key_server_sync SHARED ${INTEGRATED_MODULE_SOURCE})
+
+# install dir
+install(TARGETS mod_key_server_sync
+  LIBRARY DESTINATION "${CMAKE_INSTALL_PREFIX}/modules")
+
+# link sdk
+target_link_libraries(mod_key_server_sync PRIVATE
+  gpgfrontend_module_sdk)
+
+# link qt
+target_link_libraries(mod_key_server_sync PRIVATE Qt::Core Qt::Network)
+
+# using std c++ 17
+target_compile_features(mod_key_server_sync PRIVATE cxx_std_17)

src/m_key_server_sync/KeyServerSyncModule.cpp

@@ -0,0 +1,137 @@
+/**
+ * Copyright (C) 2021-2024 Saturneric <eric@bktus.com>
+ *
+ * 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 <eric@bktus.com> starting on May 12, 2021.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ */
+
+#include "KeyServerSyncModule.h"
+
+#include <QtCore>
+
+#include "GFModuleDefine.h"
+#include "VKSInterface.h"
+
+GF_MODULE_API_DEFINE("com.bktus.gpgfrontend.module.key_server_sync",
+                     "KeyServerSync", "1.0.0",
+                     "Sync Information From Trusted Key Server.", "Saturneric")
+
+auto GFRegisterModule() -> int {
+  LOG_DEBUG("key server sync module registering");
+
+  return 0;
+}
+
+auto GFActiveModule() -> int {
+  LISTEN("REQUEST_GET_PUBLIC_KEY_BY_FINGERPRINT");
+  LISTEN("REQUEST_GET_PUBLIC_KEY_BY_KEY_ID");
+  return 0;
+}
+
+EXECUTE_MODULE() {
+  FLOG_DEBUG("key server sync module executing, event id: %1",
+             event["event_id"]);
+
+  if (event["event_id"] == "REQUEST_GET_PUBLIC_KEY_BY_FINGERPRINT") {
+    if (event["fingerprint"].isEmpty())
+      CB_ERR(event, -1, "fingerprint is empty");
+
+    QByteArray fingerprint = event["fingerprint"].toLatin1();
+    FLOG_DEBUG("try to get key info of fingerprint: %1", fingerprint);
+
+    auto* vks = new VKSInterface();
+    vks->GetByFingerprint(fingerprint);
+    QObject::connect(vks, &VKSInterface::SignalKeyRetrieved,
+                     QThread::currentThread(), [event](const QString& key) {
+                       CB(event, GFGetModuleID(),
+                          {
+                              {"ret", QString::number(0)},
+                              {"key_data", key},
+                          });
+                     });
+    QObject::connect(vks, &VKSInterface::SignalKeyRetrieved, vks,
+                     &VKSInterface::deleteLater);
+
+    QObject::connect(vks, &VKSInterface::SignalErrorOccurred,
+                     QThread::currentThread(),
+                     [event](const QString& error, const QString& data) {
+                       CB(event, GFGetModuleID(),
+                          {
+                              {"ret", QString::number(-1)},
+                              {"error_msg", error},
+                              {"reply_data", data},
+                          });
+                     });
+    QObject::connect(vks, &VKSInterface::SignalKeyRetrieved, vks,
+                     &VKSInterface::deleteLater);
+
+    return 0;
+  }
+
+  if (event["event_id"] == "REQUEST_GET_PUBLIC_KEY_BY_KEY_ID") {
+    if (event["key_id"].isEmpty()) CB_ERR(event, -1, "key_id is empty");
+
+    QByteArray key_id = event["key_id"].toLatin1();
+    FLOG_DEBUG("try to get key info of key id: %1", key_id);
+
+    auto* vks = new VKSInterface();
+    vks->GetByKeyId(key_id);
+    QObject::connect(vks, &VKSInterface::SignalKeyRetrieved,
+                     QThread::currentThread(), [event](const QString& key) {
+                       CB(event, GFGetModuleID(),
+                          {
+                              {"ret", QString::number(0)},
+                              {"key_data", key},
+                          });
+                     });
+    QObject::connect(vks, &VKSInterface::SignalKeyRetrieved, vks,
+                     &VKSInterface::deleteLater);
+
+    QObject::connect(vks, &VKSInterface::SignalErrorOccurred,
+                     QThread::currentThread(),
+                     [event](const QString& error, const QString& data) {
+                       CB(event, GFGetModuleID(),
+                          {
+                              {"ret", QString::number(-1)},
+                              {"error_msg", error},
+                              {"reply_data", data},
+                          });
+                     });
+    QObject::connect(vks, &VKSInterface::SignalKeyRetrieved, vks,
+                     &VKSInterface::deleteLater);
+
+    return 0;
+  }
+
+  CB_SUCC(event);
+}
+END_EXECUTE_MODULE()
+
+auto GFDeactivateModule() -> int { return 0; }
+
+auto GFUnregisterModule() -> int {
+  MLogDebug("paper key module unregistering");
+
+  return 0;
+}

src/m_key_server_sync/KeyServerSyncModule.h

@@ -0,0 +1,33 @@
+/**
+ * Copyright (C) 2021-2024 Saturneric <eric@bktus.com>
+ *
+ * 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 <eric@bktus.com> starting on May 12, 2021.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ */
+
+#pragma once
+
+#include "GFModuleDeclare.h"
+
+GF_MODULE_API_DECLARE

src/m_key_server_sync/VKSInterface.cpp

@@ -0,0 +1,141 @@
+/**
+ * Copyright (C) 2021-2024 Saturneric <eric@bktus.com>
+ *
+ * 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 <eric@bktus.com> starting on May 12, 2021.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ */
+
+#include "VKSInterface.h"
+
+#include <QByteArray>
+#include <QDebug>
+#include <QJsonArray>
+#include <QJsonDocument>
+#include <QJsonObject>
+#include <QNetworkAccessManager>
+#include <QNetworkReply>
+#include <QNetworkRequest>
+#include <QString>
+#include <QUrl>
+#include <QUrlQuery>
+#include <utility>
+
+VKSInterface::VKSInterface(QString key_server, QObject* parent)
+    : QObject(parent),
+      target_key_server_(std::move(key_server)),
+      network_manager_(new QNetworkAccessManager(this)) {
+  connect(network_manager_, &QNetworkAccessManager::finished, this,
+          &VKSInterface::on_reply_finished);
+}
+
+void VKSInterface::GetByFingerprint(const QString& fingerprint) {
+  QUrl url(QString("%1/vks/v1/by-fingerprint/%2")
+               .arg(target_key_server_)
+               .arg(fingerprint));
+  QNetworkRequest request(url);
+  network_manager_->get(request);
+}
+
+void VKSInterface::GetByKeyId(const QString& keyId) {
+  QUrl url(QString("%1/vks/v1/by-keyid/%2").arg(target_key_server_).arg(keyId));
+  QNetworkRequest request(url);
+  network_manager_->get(request);
+}
+
+void VKSInterface::GetByEmail(const QString& email) {
+  QUrl url(QString("%1/vks/v1/by-email/%2")
+               .arg(target_key_server_)
+               .arg(QUrl::toPercentEncoding(email)));
+  QNetworkRequest request(url);
+  network_manager_->get(request);
+}
+
+void VKSInterface::UploadKey(const QString& key_text) {
+  QUrl url(QString("%1/vks/v1/upload").arg(target_key_server_));
+  QNetworkRequest request(url);
+  request.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
+
+  QJsonObject json;
+  json["keytext"] = key_text;
+
+  network_manager_->post(request, QJsonDocument(json).toJson());
+}
+
+void VKSInterface::RequestVerify(const QString& token,
+                                 const QStringList& addresses,
+                                 const QStringList& locale) {
+  QUrl url(QString("%1/vks/v1/request-verify").arg(target_key_server_));
+  QNetworkRequest request(url);
+  request.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
+
+  QJsonObject json;
+  json["token"] = token;
+  QJsonArray addresses_array;
+  for (const QString& address : addresses) {
+    addresses_array.append(address);
+  }
+  json["addresses"] = addresses_array;
+
+  if (!locale.isEmpty()) {
+    QJsonArray locale_array;
+    for (const QString& loc : locale) {
+      locale_array.append(loc);
+    }
+    json["locale"] = locale_array;
+  }
+
+  network_manager_->post(request, QJsonDocument(json).toJson());
+}
+
+void VKSInterface::on_reply_finished(QNetworkReply* reply) {
+  if (reply->error() != QNetworkReply::NoError) {
+    emit SignalErrorOccurred(reply->errorString(), reply->readAll());
+    reply->deleteLater();
+    return;
+  }
+
+  QUrl url = reply->url();
+  QByteArray response_data = reply->readAll();
+  QJsonDocument json_response = QJsonDocument::fromJson(response_data);
+
+  if (url.path().contains("/vks/v1/by-fingerprint") ||
+      url.path().contains("/vks/v1/by-keyid") ||
+      url.path().contains("/vks/v1/by-email")) {
+    emit SignalKeyRetrieved(QString(response_data));
+  } else if (url.path().contains("/vks/v1/upload")) {
+    if (json_response.isObject()) {
+      QJsonObject response_object = json_response.object();
+      emit SignalKeyUploaded(response_object["key_fpr"].toString(),
+                             response_object["status"].toObject());
+    }
+  } else if (url.path().contains("/vks/v1/request-verify")) {
+    if (json_response.isObject()) {
+      QJsonObject response_object = json_response.object();
+      emit SignalVerificationRequested(response_object["key_fpr"].toString(),
+                                       response_object["status"].toObject());
+    }
+  }
+
+  reply->deleteLater();
+}

src/m_key_server_sync/VKSInterface.h

@@ -0,0 +1,63 @@
+/**
+ * Copyright (C) 2021-2024 Saturneric <eric@bktus.com>
+ *
+ * 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 <eric@bktus.com> starting on May 12, 2021.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ */
+
+#include <QObject>
+
+class QNetworkAccessManager;
+class QNetworkReply;
+
+class VKSInterface : public QObject {
+  Q_OBJECT
+
+ public:
+  explicit VKSInterface(QString target_key_server = "https://keys.openpgp.org",
+                        QObject* parent = nullptr);
+
+  void GetByFingerprint(const QString& fingerprint);
+  void GetByKeyId(const QString& keyId);
+  void GetByEmail(const QString& email);
+  void UploadKey(const QString& key_text);
+  void RequestVerify(const QString& token, const QStringList& addresses,
+                     const QStringList& locale = QStringList());
+
+ signals:
+  void SignalKeyRetrieved(const QString& key);
+  void SignalKeyUploaded(const QString& key_fingerprint,
+                         const QJsonObject& status);
+  void SignalVerificationRequested(const QString& key_fingerprint,
+                                   const QJsonObject& status);
+  void SignalErrorOccurred(const QString& error_string,
+                           const QString& reply_data);
+
+ private slots:
+  void on_reply_finished(QNetworkReply* reply);
+
+ private:
+  QString target_key_server_;
+  QNetworkAccessManager* network_manager_;
+};