feat: initialize and move in two modules

17 files changed, 1794 insertions, 0 deletions

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
new file mode 100644
index 0000000..aca2f2e
--- /dev/null
+++ b/src/CMakeLists.txt
@@ -0,0 +1,28 @@
+# Copyright (C) 2021 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
+
+# modules
+add_subdirectory(ver_check)
+add_subdirectory(gpg_info)
\ No newline at end of file
diff --git a/src/gpg_info/CMakeLists.txt b/src/gpg_info/CMakeLists.txt
new file mode 100644
index 0000000..63127f5
--- /dev/null
+++ b/src/gpg_info/CMakeLists.txt
@@ -0,0 +1,65 @@
+# Copyright (C) 2021 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
+
+# com.bktus.gpgfrontend.module.integrated.gnupg_info_gathering
+
+aux_source_directory(. INTEGRATED_MODULE_SOURCE)
+
+# define libgpgfrontend_module
+add_library(mod_gpg_info SHARED ${INTEGRATED_MODULE_SOURCE})
+set(_export_file "${CMAKE_CURRENT_SOURCE_DIR}/GFModuleExport.h")
+generate_export_header(mod_gpg_info
+  BASE_NAME "GF_MODULE"
+  EXPORT_FILE_NAME "${_export_file}")
+
+target_include_directories(mod_gpg_info PRIVATE 
+  ${CMAKE_SOURCE_DIR}/third_party/spdlog/include)
+
+# set output directory
+set_target_properties(mod_gpg_info PROPERTIES
+  LIBRARY_OUTPUT_DIRECTORY ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}
+  RUNTIME_OUTPUT_DIRECTORY ${CMAKE_RUNTIME_OUTPUT_DIRECTORY})
+
+# install dir
+install(TARGETS mod_gpg_info 
+  LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}")
+
+# link sdk
+target_link_libraries(mod_gpg_info PRIVATE
+  gpgfrontend_module_sdk)
+
+if(GPGFRONTEND_QT5_BUILD)
+  # link Qt core
+  target_link_libraries(mod_gpg_info PRIVATE Qt5::Core)
+else()
+  # link Qt core
+  target_link_libraries(mod_gpg_info PRIVATE Qt6::Core)
+endif()
+
+# property
+set_property(TARGET mod_gpg_info PROPERTY AUTOMOC ON)
+
+# using std c++ 17
+target_compile_features(mod_gpg_info PRIVATE cxx_std_17)
\ No newline at end of file
diff --git a/src/gpg_info/GFModuleExport.h b/src/gpg_info/GFModuleExport.h
new file mode 100644
index 0000000..a1fc105
--- /dev/null
+++ b/src/gpg_info/GFModuleExport.h
@@ -0,0 +1,42 @@
+
+#ifndef GF_MODULE_EXPORT_H
+#define GF_MODULE_EXPORT_H
+
+#ifdef GF_MODULE_STATIC_DEFINE
+#  define GF_MODULE_EXPORT
+#  define GF_MODULE_NO_EXPORT
+#else
+#  ifndef GF_MODULE_EXPORT
+#    ifdef mod_gpg_info_EXPORTS
+        /* We are building this library */
+#      define GF_MODULE_EXPORT __attribute__((visibility("default")))
+#    else
+        /* We are using this library */
+#      define GF_MODULE_EXPORT __attribute__((visibility("default")))
+#    endif
+#  endif
+
+#  ifndef GF_MODULE_NO_EXPORT
+#    define GF_MODULE_NO_EXPORT __attribute__((visibility("hidden")))
+#  endif
+#endif
+
+#ifndef GF_MODULE_DEPRECATED
+#  define GF_MODULE_DEPRECATED __attribute__ ((__deprecated__))
+#endif
+
+#ifndef GF_MODULE_DEPRECATED_EXPORT
+#  define GF_MODULE_DEPRECATED_EXPORT GF_MODULE_EXPORT GF_MODULE_DEPRECATED
+#endif
+
+#ifndef GF_MODULE_DEPRECATED_NO_EXPORT
+#  define GF_MODULE_DEPRECATED_NO_EXPORT GF_MODULE_NO_EXPORT GF_MODULE_DEPRECATED
+#endif
+
+#if 0 /* DEFINE_NO_DEPRECATED */
+#  ifndef GF_MODULE_NO_DEPRECATED
+#    define GF_MODULE_NO_DEPRECATED
+#  endif
+#endif
+
+#endif /* GF_MODULE_EXPORT_H */
diff --git a/src/gpg_info/GnuPGInfoGatheringModule.cpp b/src/gpg_info/GnuPGInfoGatheringModule.cpp
new file mode 100644
index 0000000..8d400c8
--- /dev/null
+++ b/src/gpg_info/GnuPGInfoGatheringModule.cpp
@@ -0,0 +1,526 @@
+/**
+ * Copyright (C) 2021 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 "GnuPGInfoGatheringModule.h"
+
+#include <GFSDKBasic.h>
+#include <GFSDKBuildInfo.h>
+#include <GFSDKLog.h>
+#include <spdlog/spdlog.h>
+
+// qt
+#include <QCryptographicHash>
+#include <QFileInfo>
+#include <QJsonDocument>
+#include <QString>
+
+// c++
+#include <optional>
+
+#include "GpgInfo.h"
+
+template <>
+struct fmt::formatter<QString> {
+  // Parses format specifications.
+  constexpr auto parse(format_parse_context &ctx) -> decltype(ctx.begin()) {
+    return ctx.begin();
+  }
+
+  // Formats the QString qstr and writes it to the output.
+  template <typename FormatContext>
+  auto format(const QString &qstr, FormatContext &ctx) const
+      -> decltype(ctx.out()) {
+    // Convert QString to UTF-8 QString (to handle Unicode characters
+    // correctly)
+    QByteArray utf8_array = qstr.toUtf8();
+    return fmt::format_to(ctx.out(), "{}", utf8_array.constData());
+  }
+};
+
+template <>
+struct fmt::formatter<QByteArray> {
+  // Parses format specifications.
+  constexpr auto parse(format_parse_context &ctx) -> decltype(ctx.begin()) {
+    return ctx.begin();
+  }
+
+  // Formats the QString qstr and writes it to the output.
+  template <typename FormatContext>
+  auto format(const QByteArray &qarray, FormatContext &ctx) const
+      -> decltype(ctx.out()) {
+    // Convert QString to UTF-8 QString (to handle Unicode characters
+    // correctly)
+    return fmt::format_to(ctx.out(), "{}", qarray.constData());
+  }
+};
+
+extern auto CalculateBinaryChacksum(const QString &path)
+    -> std::optional<QString>;
+
+extern void GetGpgComponentInfos(void *, int, const char *, const char *);
+
+extern void GetGpgDirectoryInfos(void *, int, const char *, const char *);
+
+extern void GetGpgOptionInfos(void *, int, const char *, const char *);
+
+using Context = struct {
+  QString gpgme_version;
+  QString gpgconf_path;
+  GpgComponentInfo component_info;
+};
+
+auto GFGetModuleGFSDKVersion() -> const char * {
+  return GFModuleStrDup(GF_SDK_VERSION_STR);
+}
+
+auto GFGetModuleQtEnvVersion() -> const char * {
+  return GFModuleStrDup(QT_VERSION_STR);
+}
+
+auto GFGetModuleID() -> const char * {
+  return GFModuleStrDup("com.bktus.gpgfrontend.module.gnupg_info_gathering");
+}
+
+auto GFGetModuleVersion() -> const char * { return GFModuleStrDup("1.0.0"); }
+
+auto GFGetModuleMetaData() -> GFModuleMetaData * {
+  auto *p_meta = static_cast<GFModuleMetaData *>(
+      GFAllocateMemory(sizeof(GFModuleMetaData)));
+  auto *h_meta = p_meta;
+
+  p_meta->key = "Name";
+  p_meta->value = "GatherGnupgInfo";
+  p_meta->next = static_cast<GFModuleMetaData *>(
+      GFAllocateMemory(sizeof(GFModuleMetaData)));
+  p_meta = p_meta->next;
+
+  p_meta->key = "Description";
+  p_meta->value = "Try gathering gnupg informations";
+  p_meta->next = static_cast<GFModuleMetaData *>(
+      GFAllocateMemory(sizeof(GFModuleMetaData)));
+  p_meta = p_meta->next;
+
+  p_meta->key = "Author";
+  p_meta->value = "Saturneric";
+  p_meta->next = nullptr;
+  return h_meta;
+}
+
+auto GFRegisterModule() -> int {
+  GFModuleLogDebug("gnupg info gathering module registering");
+  return 0;
+}
+
+auto GFActiveModule() -> int {
+  GFModuleLogDebug("gnupg info gathering module activating");
+  GFModuleListenEvent(GFGetModuleID(),
+                      GFModuleStrDup("REQUEST_GATHERING_GNUPG_INFO"));
+  return 0;
+}
+
+auto GFExecuteModule(GFModuleEvent *event) -> int {
+  GFModuleLogDebug(
+      fmt::format("gnupg info gathering module executing, event id: {}",
+                  event->id)
+          .c_str());
+
+  GFModuleLogDebug("start to load extra info at module gnupginfogathering...");
+
+  const auto *const gpgme_version = GFModuleRetrieveRTValueOrDefault(
+      GFModuleStrDup("core"), GFModuleStrDup("gpgme.version"),
+      GFModuleStrDup("0.0.0"));
+  GFModuleLogDebug(
+      fmt::format("got gpgme version from rt: {}", gpgme_version).c_str());
+
+  const auto *const gpgconf_path = GFModuleRetrieveRTValueOrDefault(
+      GFModuleStrDup("core"), GFModuleStrDup("gpgme.ctx.gpgconf_path"),
+      GFModuleStrDup(""));
+  GFModuleLogDebug(
+      fmt::format("got gpgconf path from rt: {}", gpgconf_path).c_str());
+
+  auto context = Context{gpgme_version, gpgconf_path};
+
+  // get all components
+  const char *argv[] = {GFModuleStrDup("--list-components")};
+  GFExecuteCommandSync(gpgconf_path, 1, argv, GetGpgComponentInfos, &context);
+  GFModuleLogDebug("load gnupg component info done.");
+
+#ifdef QT5_BUILD
+  QVector<GFCommandExecuteContext> exec_contexts;
+#else
+  QList<GFCommandExecuteContext> exec_contexts;
+#endif
+
+  const char **argv_0 =
+      static_cast<const char **>(GFAllocateMemory(sizeof(const char *)));
+  argv_0[0] = GFModuleStrDup("--list-dirs");
+
+  exec_contexts.push_back(
+      {gpgconf_path, 1, argv_0, GetGpgDirectoryInfos, nullptr});
+
+  char **components_c_array;
+  int ret = GFModuleListRTChildKeys(
+      GFGetModuleID(), GFModuleStrDup("gnupg.components"), &components_c_array);
+  if (components_c_array == nullptr || ret == 0) return -1;
+
+  QStringList components;
+  auto *p_a = components_c_array;
+  for (int i = 0; i < ret; i++) components.append(QString::fromUtf8(p_a[i]));
+
+  for (const auto &component : components) {
+    const auto *component_info_json = GFModuleRetrieveRTValueOrDefault(
+        GFGetModuleID(),
+        GFModuleStrDup(QString("gnupg.components.%1").arg(component).toUtf8()),
+        nullptr);
+
+    if (component_info_json == nullptr) continue;
+
+    auto jsonlized_component_info =
+        QJsonDocument::fromJson(component_info_json);
+    assert(jsonlized_component_info.isObject());
+
+    auto component_info = GpgComponentInfo(jsonlized_component_info.object());
+    GFModuleLogDebug(fmt::format("gpgconf check options ready, "
+                                 "component: {}",
+                                 component_info.name)
+                         .c_str());
+
+    if (component_info.name == "gpgme" || component_info.name == "gpgconf") {
+      continue;
+    }
+
+    auto *context = new (GFAllocateMemory(sizeof(Context)))
+        Context{gpgme_version, gpgconf_path, component_info};
+
+    const char **argv_0 =
+        static_cast<const char **>(GFAllocateMemory(sizeof(const char *) * 2));
+    argv_0[0] = GFModuleStrDup("--list-options"),
+    argv_0[1] = GFModuleStrDup(component_info.name.toUtf8());
+    exec_contexts.push_back(
+        {gpgconf_path, 2, argv_0, GetGpgOptionInfos, context});
+  }
+
+  GFExecuteCommandBatchSync(static_cast<int32_t>(exec_contexts.size()),
+                            exec_contexts.constData());
+  GFModuleUpsertRTValueBool(GFGetModuleID(),
+                            GFModuleStrDup("gnupg.gathering_done"), 1);
+
+  char **event_argv =
+      static_cast<char **>(GFAllocateMemory(sizeof(char **) * 1));
+  event_argv[0] = GFModuleStrDup("0");
+
+  GFModuleTriggerModuleEventCallback(event, GFGetModuleID(), 1, event_argv);
+
+  GFModuleLogDebug("gnupg external info gathering done");
+  return 0;
+}
+
+auto GFDeactiveModule() -> int { return 0; }
+
+auto GFUnregisterModule() -> int {
+  GFModuleLogDebug("gnupg info gathering module unregistering");
+  return 0;
+}
+
+auto CalculateBinaryChacksum(const QString &path) -> std::optional<QString> {
+  // check file info and access rights
+  QFileInfo info(path);
+  if (!info.exists() || !info.isFile() || !info.isReadable()) {
+    GFModuleLogError(fmt::format("get info for file {} error, exists: {}",
+                                 info.filePath(), info.exists())
+                         .c_str());
+    return {};
+  }
+
+  // open and read file
+  QFile f(info.filePath());
+  if (!f.open(QIODevice::ReadOnly)) {
+    GFModuleLogError(fmt::format("open {} to calculate checksum error: {}",
+                                 path.toStdString(),
+                                 f.errorString().toStdString())
+                         .c_str());
+    return {};
+  }
+
+  QCryptographicHash hash_sha(QCryptographicHash::Sha256);
+
+  // read data by chunks
+  const qint64 buffer_size = 8192;  // Define a suitable buffer size
+  while (!f.atEnd()) {
+    QByteArray const buffer = f.read(buffer_size);
+    if (buffer.isEmpty()) {
+      GFModuleLogError(fmt::format("error reading file {} during "
+                                   "checksum calculation",
+                                   path.toStdString())
+                           .c_str());
+      return {};
+    }
+    hash_sha.addData(buffer);
+  }
+
+  // close the file
+  f.close();
+
+  // return the first 6 characters of the SHA-256 hash
+  // of the file
+  return QString(hash_sha.result().toHex()).left(6);
+}
+
+void GetGpgComponentInfos(void *data, int exit_code, const char *out,
+                          const char *err) {
+  auto *context = reinterpret_cast<Context *>(data);
+  auto p_out = QString::fromUtf8(out);
+  auto p_err = QString::fromUtf8(err);
+
+  GFModuleLogDebug(fmt::format("gpgconf components exit_code: {} "
+                               "process stdout size: {}",
+                               exit_code, p_out.size())
+                       .c_str());
+
+  if (exit_code != 0) {
+    GFModuleLogError(fmt::format("gpgconf execute error, process "
+                                 "stderr: {}, "
+                                 "process stdout: {}",
+                                 p_err, p_out)
+                         .c_str());
+    return;
+  }
+
+  std::vector<GpgComponentInfo> component_infos;
+  GpgComponentInfo c_i_gpgme;
+  c_i_gpgme.name = "gpgme";
+  c_i_gpgme.desc = "GPG Made Easy";
+  c_i_gpgme.version = context->gpgme_version;
+  c_i_gpgme.path = "Embedded In";
+  c_i_gpgme.binary_checksum = "/";
+
+  GpgComponentInfo c_i_gpgconf;
+  c_i_gpgconf.name = "gpgconf";
+  c_i_gpgconf.desc = "GPG Configure";
+  c_i_gpgconf.version = "/";
+  c_i_gpgconf.path = context->gpgconf_path;
+  auto gpgconf_binary_checksum = CalculateBinaryChacksum(context->gpgconf_path);
+  c_i_gpgconf.binary_checksum =
+      (gpgconf_binary_checksum.has_value() ? gpgconf_binary_checksum.value()
+                                           : QString("/"));
+
+  component_infos.push_back(c_i_gpgme);
+  component_infos.push_back(c_i_gpgconf);
+
+  auto const jsonlized_gpgme_component_info = c_i_gpgme.Json();
+  auto const jsonlized_gpgconf_component_info = c_i_gpgconf.Json();
+  GFModuleUpsertRTValue(
+      GFGetModuleID(), GFModuleStrDup("gnupg.components.gpgme"),
+      GFModuleStrDup(QJsonDocument(jsonlized_gpgme_component_info).toJson()));
+  GFModuleUpsertRTValue(
+      GFGetModuleID(), GFModuleStrDup("gnupg.components.gpgconf"),
+      GFModuleStrDup(QJsonDocument(jsonlized_gpgconf_component_info).toJson()));
+
+  auto line_split_list = p_out.split("\n");
+
+  for (const auto &line : line_split_list) {
+    auto info_split_list = line.split(":");
+
+    if (info_split_list.size() != 3) continue;
+
+    auto component_name = info_split_list[0].trimmed();
+    auto component_desc = info_split_list[1].trimmed();
+    auto component_path = info_split_list[2].trimmed();
+
+#ifdef WINDOWS
+    // replace some special substrings on windows
+    // platform
+    component_path.replace("%3a", ":");
+#endif
+
+    auto binary_checksum = CalculateBinaryChacksum(component_path);
+
+    GFModuleLogDebug(
+        fmt::format("gnupg component name: {} desc: "
+                    "{} checksum: {} path: {} ",
+                    component_name, component_desc,
+                    binary_checksum.has_value() ? binary_checksum.value() : "/",
+                    component_path)
+            .c_str());
+
+    QString version = "/";
+
+    if (component_name == "gpg") {
+      version = GFModuleRetrieveRTValueOrDefault(
+          GFModuleStrDup("core"), GFModuleStrDup("gpgme.ctx.gnupg_version"),
+          GFModuleStrDup("2.0.0"));
+    }
+    if (component_name == "gpg-agent") {
+      GFModuleUpsertRTValue(GFGetModuleID(),
+                            GFModuleStrDup("gnupg.gpg_agent_path"),
+                            GFModuleStrDup(QString(component_path).toUtf8()));
+    }
+    if (component_name == "dirmngr") {
+      GFModuleUpsertRTValue(GFGetModuleID(),
+                            GFModuleStrDup("gnupg.dirmngr_path"),
+                            GFModuleStrDup(QString(component_path).toUtf8()));
+    }
+    if (component_name == "keyboxd") {
+      GFModuleUpsertRTValue(GFGetModuleID(),
+                            GFModuleStrDup("gnupg.keyboxd_path"),
+                            GFModuleStrDup(QString(component_path).toUtf8()));
+    }
+
+    {
+      GpgComponentInfo c_i;
+      c_i.name = component_name;
+      c_i.desc = component_desc;
+      c_i.version = version;
+      c_i.path = component_path;
+      c_i.binary_checksum =
+          (binary_checksum.has_value() ? binary_checksum.value()
+                                       : QString("/"));
+
+      auto const jsonlized_component_info = c_i.Json();
+      GFModuleUpsertRTValue(
+          GFGetModuleID(),
+          GFModuleStrDup(
+              QString("gnupg.components.%1").arg(component_name).toUtf8()),
+          GFModuleStrDup(QJsonDocument(jsonlized_component_info).toJson()));
+
+      component_infos.push_back(c_i);
+    }
+
+    GFModuleLogDebug("load gnupg component info actually done.");
+  }
+}
+
+void GetGpgDirectoryInfos(void *, int exit_code, const char *out,
+                          const char *err) {
+  if (exit_code != 0) return;
+
+  auto p_out = QString::fromUtf8(out);
+  auto p_err = QString::fromUtf8(err);
+  auto line_split_list = p_out.split("\n");
+
+  for (const auto &line : line_split_list) {
+    auto info_split_list = line.split(":");
+    GFModuleLogDebug(fmt::format("gpgconf direcrotries info line: "
+                                 "{} info size: {}",
+                                 line, info_split_list.size())
+                         .c_str());
+
+    if (info_split_list.size() != 2) continue;
+
+    auto configuration_name = info_split_list[0].trimmed();
+    auto configuration_value = info_split_list[1].trimmed();
+
+#ifdef WINDOWS
+    // replace some special substrings on windows
+    // platform
+    configuration_value.replace("%3a", ":");
+#endif
+
+    // record gnupg home path
+    if (configuration_name == "homedir") {
+      GFModuleUpsertRTValue(GFGetModuleID(), GFModuleStrDup("gnupg.home_path"),
+                            GFModuleStrDup(configuration_value.toUtf8()));
+    }
+
+    GFModuleUpsertRTValue(
+        GFGetModuleID(),
+        GFModuleStrDup(
+            QString("gnupg.dirs.%1").arg(configuration_name).toUtf8()),
+        GFModuleStrDup(configuration_value.toUtf8()));
+  }
+}
+
+void GetGpgOptionInfos(void *data, int exit_code, const char *out,
+                       const char *err) {
+  if (exit_code != 0) return;
+
+  auto p_out = QString::fromUtf8(out);
+  auto p_err = QString::fromUtf8(err);
+  auto *context = reinterpret_cast<Context *>(data);
+  auto component_name = context->component_info.name;
+
+  GFModuleLogDebug(fmt::format("gpgconf {} avaliable options "
+                               "exit_code: {} process stdout "
+                               "size: {} ",
+                               component_name, exit_code, p_out.size())
+                       .c_str());
+
+  std::vector<GpgOptionsInfo> options_infos;
+
+  auto line_split_list = p_out.split("\n");
+
+  for (const auto &line : line_split_list) {
+    auto info_split_list = line.split(":");
+
+    GFModuleLogDebug(fmt::format("component {} avaliable options "
+                                 "line: {} info size: {}",
+                                 component_name, line, info_split_list.size())
+                         .c_str());
+
+    if (info_split_list.size() < 10) continue;
+
+    // The format of each line is:
+    // name:flags:level:description:type:alt-type:argname:default:argdef:value
+
+    auto option_name = info_split_list[0].trimmed();
+    auto option_flags = info_split_list[1].trimmed();
+    auto option_level = info_split_list[2].trimmed();
+    auto option_desc = info_split_list[3].trimmed();
+    auto option_type = info_split_list[4].trimmed();
+    auto option_alt_type = info_split_list[5].trimmed();
+    auto option_argname = info_split_list[6].trimmed();
+    auto option_default = info_split_list[7].trimmed();
+    auto option_argdef = info_split_list[8].trimmed();
+    auto option_value = info_split_list[9].trimmed();
+
+    GpgOptionsInfo info;
+    info.name = option_name;
+    info.flags = option_flags;
+    info.level = option_level;
+    info.description = option_desc;
+    info.type = option_type;
+    info.alt_type = option_alt_type;
+    info.argname = option_argname;
+    info.default_value = option_default;
+    info.argdef = option_argdef;
+    info.value = option_value;
+
+    auto const jsonlized_option_info = info.Json();
+    GFModuleUpsertRTValue(
+        GFGetModuleID(),
+        GFModuleStrDup(QString("gnupg.components.%1.options.%2")
+                           .arg(component_name)
+                           .arg(option_name)
+                           .toUtf8()),
+        GFModuleStrDup(QJsonDocument(jsonlized_option_info).toJson()));
+    options_infos.push_back(info);
+  }
+
+  context->~Context();
+  GFFreeMemory(context);
+}
diff --git a/src/gpg_info/GnuPGInfoGatheringModule.h b/src/gpg_info/GnuPGInfoGatheringModule.h
new file mode 100644
index 0000000..35ee4ac
--- /dev/null
+++ b/src/gpg_info/GnuPGInfoGatheringModule.h
@@ -0,0 +1,56 @@
+/**
+ * Copyright (C) 2021 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
+ *
+ */
+
+#pragma once
+
+#include <GFSDKModule.h>
+
+#include "GFModuleExport.h"
+
+extern "C" {
+
+auto GF_MODULE_EXPORT GFGetModuleGFSDKVersion() -> const char *;
+
+auto GF_MODULE_EXPORT GFGetModuleQtEnvVersion() -> const char *;
+
+auto GF_MODULE_EXPORT GFGetModuleID() -> const char *;
+
+auto GF_MODULE_EXPORT GFGetModuleVersion() -> const char *;
+
+auto GF_MODULE_EXPORT GFGetModuleMetaData() -> GFModuleMetaData *;
+
+auto GF_MODULE_EXPORT GFRegisterModule() -> int;
+
+auto GF_MODULE_EXPORT GFActiveModule() -> int;
+
+auto GF_MODULE_EXPORT GFExecuteModule(GFModuleEvent *) -> int;
+
+auto GF_MODULE_EXPORT GFDeactiveModule() -> int;
+
+auto GF_MODULE_EXPORT GFUnregisterModule() -> int;
+};
diff --git a/src/gpg_info/GpgInfo.cpp b/src/gpg_info/GpgInfo.cpp
new file mode 100644
index 0000000..680f4a8
--- /dev/null
+++ b/src/gpg_info/GpgInfo.cpp
@@ -0,0 +1,79 @@
+/**
+ * Copyright (C) 2021 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 "GpgInfo.h"
+
+GpgOptionsInfo::GpgOptionsInfo(const QJsonObject &j) {
+  if (const auto v = j["name"]; v.isString()) name = v.toString();
+  if (const auto v = j["flags"]; v.isString()) flags = v.toString();
+  if (const auto v = j["level"]; v.isString()) level = v.toString();
+  if (const auto v = j["description"]; v.isString()) description = v.toString();
+  if (const auto v = j["type"]; v.isString()) type = v.toString();
+  if (const auto v = j["alt_type"]; v.isString()) alt_type = v.toString();
+  if (const auto v = j["argname"]; v.isString()) argname = v.toString();
+  if (const auto v = j["default_value"]; v.isString()) {
+    default_value = v.toString();
+  }
+  if (const auto v = j["argdef"]; v.isString()) argdef = v.toString();
+  if (const auto v = j["value"]; v.isString()) value = v.toString();
+}
+
+auto GpgOptionsInfo::Json() const -> QJsonObject {
+  QJsonObject j;
+  j["name"] = name;
+  j["flags"] = flags;
+  j["level"] = level;
+  j["description"] = description;
+  j["type"] = type;
+  j["alt_type"] = alt_type;
+  j["argname"] = argname;
+  j["default_value"] = default_value;
+  j["argdef"] = argdef;
+  j["value"] = value;
+  return j;
+}
+
+auto GpgComponentInfo::Json() const -> QJsonObject {
+  QJsonObject j;
+  j["name"] = name;
+  j["desc"] = desc;
+  j["version"] = version;
+  j["path"] = path;
+  j["binary_checksum"] = binary_checksum;
+  return j;
+}
+
+GpgComponentInfo::GpgComponentInfo(const QJsonObject &j) {
+  if (const auto v = j["name"]; v.isString()) name = v.toString();
+  if (const auto v = j["desc"]; v.isString()) desc = v.toString();
+  if (const auto v = j["version"]; v.isString()) version = v.toString();
+  if (const auto v = j["path"]; v.isString()) path = v.toString();
+  if (const auto v = j["binary_checksum"]; v.isString()) {
+    binary_checksum = v.toString();
+  }
+}
diff --git a/src/gpg_info/GpgInfo.h b/src/gpg_info/GpgInfo.h
new file mode 100644
index 0000000..1aacc20
--- /dev/null
+++ b/src/gpg_info/GpgInfo.h
@@ -0,0 +1,88 @@
+/**
+ * Copyright (C) 2021 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
+ *
+ */
+
+#pragma once
+
+#include <QJsonObject>
+#include <QString>
+#include <map>
+
+/**
+ * @brief  Use to record some info about gnupg
+ *
+ */
+class GpgInfo {
+ public:
+  QString GnuPGHomePath;  ///< value of ---homedir
+
+  std::map<QString, std::vector<QString>> ComponentsInfo;        ///<
+  std::map<QString, std::vector<QString>> ConfigurationsInfo;    ///<
+  std::map<QString, std::vector<QString>> OptionsInfo;           ///<
+  std::map<QString, std::vector<QString>> AvailableOptionsInfo;  ///<
+};
+
+/**
+ * @brief  Use to record some info about gnupg components
+ *
+ */
+struct GpgComponentInfo {
+  QString name;
+  QString desc;
+  QString version;
+  QString path;
+  QString binary_checksum;
+
+  GpgComponentInfo() = default;
+
+  explicit GpgComponentInfo(const QJsonObject &j);
+
+  [[nodiscard]] auto Json() const -> QJsonObject;
+};
+
+/**
+ * The format of each line is:
+ * name:flags:level:description:type:alt-type:argname:default:argdef:value
+ */
+struct GpgOptionsInfo {
+  QString name;
+  QString flags;
+  QString level;
+  QString description;
+  QString type;
+  QString alt_type;
+  QString argname;
+  QString default_value;
+  QString argdef;
+  QString value;
+
+  GpgOptionsInfo() = default;
+
+  explicit GpgOptionsInfo(const QJsonObject &j);
+
+  [[nodiscard]] auto Json() const -> QJsonObject;
+};
diff --git a/src/gpg_info/QtLoggerFmt.h b/src/gpg_info/QtLoggerFmt.h
new file mode 100644
index 0000000..2399746
--- /dev/null
+++ b/src/gpg_info/QtLoggerFmt.h
@@ -0,0 +1,68 @@
+/**
+ * Copyright (C) 2021 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
+ *
+ */
+
+#pragma once
+
+#include <spdlog/spdlog.h>
+
+#include <QString>
+
+template <>
+struct fmt::formatter<QString> {
+  // Parses format specifications.
+  constexpr auto parse(format_parse_context& ctx) -> decltype(ctx.begin()) {
+    return ctx.begin();
+  }
+
+  // Formats the QString qstr and writes it to the output.
+  template <typename FormatContext>
+  auto format(const QString& qstr, FormatContext& ctx) const
+      -> decltype(ctx.out()) {
+    // Convert QString to UTF-8 QString (to handle Unicode characters
+    // correctly)
+    QByteArray utf8_array = qstr.toUtf8();
+    return fmt::format_to(ctx.out(), "{}", utf8_array.constData());
+  }
+};
+
+template <>
+struct fmt::formatter<QByteArray> {
+  // Parses format specifications.
+  constexpr auto parse(format_parse_context& ctx) -> decltype(ctx.begin()) {
+    return ctx.begin();
+  }
+
+  // Formats the QString qstr and writes it to the output.
+  template <typename FormatContext>
+  auto format(const QByteArray& qarray, FormatContext& ctx) const
+      -> decltype(ctx.out()) {
+    // Convert QString to UTF-8 QString (to handle Unicode characters
+    // correctly)
+    return fmt::format_to(ctx.out(), "{}", qarray.constData());
+  }
+};
diff --git a/src/ver_check/CMakeLists.txt b/src/ver_check/CMakeLists.txt
new file mode 100644
index 0000000..30a6faf
--- /dev/null
+++ b/src/ver_check/CMakeLists.txt
@@ -0,0 +1,64 @@
+# Copyright (C) 2021 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
+
+# com.bktus.gpgfrontend.module.integrated.version_checking
+
+aux_source_directory(. INTEGRATED_MODULE_SOURCE)
+
+# define libgpgfrontend_module
+add_library(mod_ver_check SHARED ${INTEGRATED_MODULE_SOURCE})
+set(_export_file "${CMAKE_CURRENT_SOURCE_DIR}/GFModuleExport.h")
+generate_export_header(mod_ver_check 
+  BASE_NAME "GF_MODULE"
+  EXPORT_FILE_NAME "${_export_file}")
+
+target_include_directories(mod_ver_check PRIVATE 
+  ${CMAKE_SOURCE_DIR}/third_party/spdlog/include)
+
+# set output directory
+set_target_properties(mod_ver_check PROPERTIES
+  LIBRARY_OUTPUT_DIRECTORY ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}
+  RUNTIME_OUTPUT_DIRECTORY ${CMAKE_RUNTIME_OUTPUT_DIRECTORY})
+
+install(TARGETS mod_ver_check 
+    LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}")
+
+# link sdk
+target_link_libraries(mod_ver_check PRIVATE
+  gpgfrontend_module_sdk)
+
+if(GPGFRONTEND_QT5_BUILD)
+  # link Qt
+  target_link_libraries(mod_ver_check PUBLIC Qt5::Core Qt5::Network)
+else()
+  # link Qt
+  target_link_libraries(mod_ver_check PUBLIC Qt6::Core Qt6::Network)
+endif()
+
+# property
+set_property(TARGET mod_ver_check PROPERTY AUTOMOC ON)
+
+# using std c++ 17
+target_compile_features(mod_ver_check PRIVATE cxx_std_17)
\ No newline at end of file
diff --git a/src/ver_check/GFModuleExport.h b/src/ver_check/GFModuleExport.h
new file mode 100644
index 0000000..ce663b5
--- /dev/null
+++ b/src/ver_check/GFModuleExport.h
@@ -0,0 +1,42 @@
+
+#ifndef GF_MODULE_EXPORT_H
+#define GF_MODULE_EXPORT_H
+
+#ifdef GF_MODULE_STATIC_DEFINE
+#  define GF_MODULE_EXPORT
+#  define GF_MODULE_NO_EXPORT
+#else
+#  ifndef GF_MODULE_EXPORT
+#    ifdef mod_ver_check_EXPORTS
+        /* We are building this library */
+#      define GF_MODULE_EXPORT __attribute__((visibility("default")))
+#    else
+        /* We are using this library */
+#      define GF_MODULE_EXPORT __attribute__((visibility("default")))
+#    endif
+#  endif
+
+#  ifndef GF_MODULE_NO_EXPORT
+#    define GF_MODULE_NO_EXPORT __attribute__((visibility("hidden")))
+#  endif
+#endif
+
+#ifndef GF_MODULE_DEPRECATED
+#  define GF_MODULE_DEPRECATED __attribute__ ((__deprecated__))
+#endif
+
+#ifndef GF_MODULE_DEPRECATED_EXPORT
+#  define GF_MODULE_DEPRECATED_EXPORT GF_MODULE_EXPORT GF_MODULE_DEPRECATED
+#endif
+
+#ifndef GF_MODULE_DEPRECATED_NO_EXPORT
+#  define GF_MODULE_DEPRECATED_NO_EXPORT GF_MODULE_NO_EXPORT GF_MODULE_DEPRECATED
+#endif
+
+#if 0 /* DEFINE_NO_DEPRECATED */
+#  ifndef GF_MODULE_NO_DEPRECATED
+#    define GF_MODULE_NO_DEPRECATED
+#  endif
+#endif
+
+#endif /* GF_MODULE_EXPORT_H */
diff --git a/src/ver_check/QtLoggerFmt.h b/src/ver_check/QtLoggerFmt.h
new file mode 100644
index 0000000..2399746
--- /dev/null
+++ b/src/ver_check/QtLoggerFmt.h
@@ -0,0 +1,68 @@
+/**
+ * Copyright (C) 2021 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
+ *
+ */
+
+#pragma once
+
+#include <spdlog/spdlog.h>
+
+#include <QString>
+
+template <>
+struct fmt::formatter<QString> {
+  // Parses format specifications.
+  constexpr auto parse(format_parse_context& ctx) -> decltype(ctx.begin()) {
+    return ctx.begin();
+  }
+
+  // Formats the QString qstr and writes it to the output.
+  template <typename FormatContext>
+  auto format(const QString& qstr, FormatContext& ctx) const
+      -> decltype(ctx.out()) {
+    // Convert QString to UTF-8 QString (to handle Unicode characters
+    // correctly)
+    QByteArray utf8_array = qstr.toUtf8();
+    return fmt::format_to(ctx.out(), "{}", utf8_array.constData());
+  }
+};
+
+template <>
+struct fmt::formatter<QByteArray> {
+  // Parses format specifications.
+  constexpr auto parse(format_parse_context& ctx) -> decltype(ctx.begin()) {
+    return ctx.begin();
+  }
+
+  // Formats the QString qstr and writes it to the output.
+  template <typename FormatContext>
+  auto format(const QByteArray& qarray, FormatContext& ctx) const
+      -> decltype(ctx.out()) {
+    // Convert QString to UTF-8 QString (to handle Unicode characters
+    // correctly)
+    return fmt::format_to(ctx.out(), "{}", qarray.constData());
+  }
+};
diff --git a/src/ver_check/SoftwareVersion.cpp b/src/ver_check/SoftwareVersion.cpp
new file mode 100644
index 0000000..cd86419
--- /dev/null
+++ b/src/ver_check/SoftwareVersion.cpp
@@ -0,0 +1,100 @@
+/**
+ * Copyright (C) 2021 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 "SoftwareVersion.h"
+
+#include <GFSDKBasic.h>
+#include <GFSDKExtra.h>
+#include <GFSDKLog.h>
+#include <spdlog/spdlog.h>
+
+#include <QString>
+
+template <>
+struct fmt::formatter<QString> {
+  // Parses format specifications.
+  constexpr auto parse(format_parse_context& ctx) -> decltype(ctx.begin()) {
+    return ctx.begin();
+  }
+
+  // Formats the QString qstr and writes it to the output.
+  template <typename FormatContext>
+  auto format(const QString& qstr, FormatContext& ctx) const
+      -> decltype(ctx.out()) {
+    // Convert QString to UTF-8 QString (to handle Unicode characters
+    // correctly)
+    QByteArray utf8_array = qstr.toUtf8();
+    return fmt::format_to(ctx.out(), "{}", utf8_array.constData());
+  }
+};
+
+template <>
+struct fmt::formatter<QByteArray> {
+  // Parses format specifications.
+  constexpr auto parse(format_parse_context& ctx) -> decltype(ctx.begin()) {
+    return ctx.begin();
+  }
+
+  // Formats the QString qstr and writes it to the output.
+  template <typename FormatContext>
+  auto format(const QByteArray& qarray, FormatContext& ctx) const
+      -> decltype(ctx.out()) {
+    // Convert QString to UTF-8 QString (to handle Unicode characters
+    // correctly)
+    return fmt::format_to(ctx.out(), "{}", qarray.constData());
+  }
+};
+
+auto SoftwareVersion::NeedUpgrade() const -> bool {
+  GFModuleLogDebug(
+      fmt::format(
+          "compair version current {} latest {}, result {}", current_version,
+          latest_version,
+          GFCompareSoftwareVersion(GFModuleStrDup(current_version.toUtf8()),
+                                   GFModuleStrDup(latest_version.toUtf8())))
+          .c_str());
+
+  GFModuleLogDebug(fmt::format("load done: {}, pre-release: {}, draft: {}",
+                               loading_done,
+                               latest_prerelease_version_from_remote,
+                               latest_draft_from_remote)
+                       .c_str());
+  return loading_done && !latest_prerelease_version_from_remote &&
+         !latest_draft_from_remote &&
+         GFCompareSoftwareVersion(GFModuleStrDup(current_version.toUtf8()),
+                                  GFModuleStrDup(latest_version.toUtf8())) < 0;
+}
+
+auto SoftwareVersion::VersionWithdrawn() const -> bool {
+  return loading_done && !current_version_publish_in_remote &&
+         current_version_is_a_prerelease && !current_version_is_drafted;
+}
+
+auto SoftwareVersion::CurrentVersionReleased() const -> bool {
+  return loading_done && current_version_publish_in_remote;
+}
\ No newline at end of file
diff --git a/src/ver_check/SoftwareVersion.h b/src/ver_check/SoftwareVersion.h
new file mode 100644
index 0000000..6b05d41
--- /dev/null
+++ b/src/ver_check/SoftwareVersion.h
@@ -0,0 +1,83 @@
+/**
+ * Copyright (C) 2021 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
+ *
+ */
+
+#pragma once
+
+#include <QString>
+
+/**
+ * @brief
+ *
+ */
+struct SoftwareVersion {
+  QString latest_version;                              ///<
+  QString current_version;                             ///<
+  bool latest_prerelease_version_from_remote = false;  ///<
+  bool latest_draft_from_remote = false;               ///<
+  bool current_version_is_a_prerelease = false;        ///<
+  bool current_version_is_drafted = false;             ///<
+  bool loading_done = false;                           ///<
+  bool current_version_publish_in_remote = false;      ///<
+  QString publish_date;                                ///<
+  QString release_note;                                ///<
+
+  /**
+   * @brief
+   *
+   * @return true
+   * @return false
+   */
+  [[nodiscard]] auto InfoValid() const -> bool { return loading_done; }
+
+  /**
+   * @brief
+   *
+   * @return true
+   * @return false
+   */
+  [[nodiscard]] auto NeedUpgrade() const -> bool;
+
+  /**
+   * @brief
+   *
+   * @return true
+   * @return false
+   */
+  [[nodiscard]] auto VersionWithdrawn() const -> bool;
+
+  /**
+   * @brief
+   *
+   * @return true
+   * @return false
+   */
+  [[nodiscard]] auto CurrentVersionReleased() const -> bool;
+
+ private:
+  static auto version_compare(const QString& a, const QString& b) -> int;
+};
diff --git a/src/ver_check/VersionCheckTask.cpp b/src/ver_check/VersionCheckTask.cpp
new file mode 100644
index 0000000..a0a3dfe
--- /dev/null
+++ b/src/ver_check/VersionCheckTask.cpp
@@ -0,0 +1,176 @@
+/**
+ * Copyright (C) 2021 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 "VersionCheckTask.h"
+
+#include <GFSDKBasic.h>
+#include <GFSDKExtra.h>
+#include <GFSDKLog.h>
+
+#include <QMetaType>
+#include <QtNetwork>
+
+// spdlog
+#include <spdlog/spdlog.h>
+
+#include "LogFormatter.h"
+
+VersionCheckTask::VersionCheckTask()
+    : network_manager_(new QNetworkAccessManager(this)),
+      current_version_(GFProjectVersion()) {
+  qRegisterMetaType<SoftwareVersion>("SoftwareVersion");
+  version_.current_version = current_version_;
+}
+
+auto VersionCheckTask::Run() -> int {
+  GFModuleLogDebug(
+      fmt::format("current project version: {}", current_version_).c_str());
+  QString latest_version_url =
+      "https://api.github.com/repos/saturneric/gpgfrontend/releases/latest";
+
+  QNetworkRequest latest_request(latest_version_url);
+  latest_request.setHeader(QNetworkRequest::UserAgentHeader,
+                           GFHttpRequestUserAgent());
+
+  latest_reply_ = network_manager_->get(latest_request);
+  connect(latest_reply_, &QNetworkReply::finished, this,
+          &VersionCheckTask::slot_parse_latest_version_info);
+  return 0;
+}
+
+void VersionCheckTask::slot_parse_latest_version_info() {
+  if (latest_reply_ == nullptr) {
+    version_.latest_version = current_version_;
+    version_.loading_done = false;
+  } else if (latest_reply_->error() != QNetworkReply::NoError) {
+    GFModuleLogError(fmt::format("latest version request error: ",
+                                 latest_reply_->errorString())
+                         .c_str());
+    version_.latest_version = current_version_;
+  } else {
+    latest_reply_bytes_ = latest_reply_->readAll();
+    auto latest_reply_json = QJsonDocument::fromJson(latest_reply_bytes_);
+
+    if (latest_reply_json.isObject()) {
+      QString latest_version = latest_reply_json["tag_name"].toString();
+
+      QRegularExpression re(R"(^[vV](\d+\.)?(\d+\.)?(\*|\d+))");
+      auto version_match = re.match(latest_version);
+      if (version_match.hasMatch()) {
+        latest_version = version_match.captured(0);
+        GFModuleLogInfo(fmt::format("latest released version from github: {}",
+                                    latest_version)
+                            .c_str());
+      } else {
+        latest_version = current_version_;
+        GFModuleLogWarn(
+            fmt::format("latest version unknown, set to current version: {}",
+                        current_version_)
+                .c_str());
+      }
+
+      bool prerelease = latest_reply_json["prerelease"].toBool();
+      bool draft = latest_reply_json["draft"].toBool();
+      auto publish_date = latest_reply_json["published_at"].toString();
+      auto release_note = latest_reply_json["body"].toString();
+      version_.latest_version = latest_version;
+      version_.latest_prerelease_version_from_remote = prerelease;
+      version_.latest_draft_from_remote = draft;
+      version_.publish_date = publish_date;
+      version_.release_note = release_note;
+    } else {
+      GFModuleLogWarn(fmt::format("cannot parse data got from github: {}",
+                                  latest_reply_bytes_)
+                          .c_str());
+    }
+  }
+
+  if (latest_reply_ != nullptr) {
+    latest_reply_->deleteLater();
+  }
+
+  try {
+    QString current_version_url =
+        "https://api.github.com/repos/saturneric/gpgfrontend/releases/tags/" +
+        current_version_;
+    GFModuleLogDebug(
+        fmt::format("current version info query url: {}", current_version_url)
+            .c_str());
+
+    QNetworkRequest current_request(current_version_url);
+    current_request.setHeader(QNetworkRequest::UserAgentHeader,
+                              GFHttpRequestUserAgent());
+
+    current_reply_ = network_manager_->get(current_request);
+
+    connect(current_reply_, &QNetworkReply::finished, this,
+            &VersionCheckTask::slot_parse_current_version_info);
+  } catch (...) {
+    GFModuleLogError("current version request create error");
+  }
+}
+
+void VersionCheckTask::slot_parse_current_version_info() {
+  if (current_reply_ == nullptr) {
+    // loading done
+    version_.loading_done = false;
+
+  } else if (current_reply_->error() != QNetworkReply::NoError) {
+    GFModuleLogError(fmt::format("current version request network error: {}",
+                                 current_reply_->errorString())
+                         .c_str());
+
+    // loading done
+    version_.loading_done = true;
+    version_.current_version_publish_in_remote = false;
+  } else {
+    version_.current_version_publish_in_remote = true;
+    current_reply_bytes_ = current_reply_->readAll();
+    auto current_reply_json = QJsonDocument::fromJson(current_reply_bytes_);
+
+    if (current_reply_json.isObject()) {
+      bool current_prerelease = current_reply_json["prerelease"].toBool();
+      bool current_draft = current_reply_json["draft"].toBool();
+      version_.latest_prerelease_version_from_remote = current_prerelease;
+      version_.latest_draft_from_remote = current_draft;
+      // loading done
+      version_.loading_done = true;
+    } else {
+      GFModuleLogWarn(fmt::format("cannot parse data got from github: {}",
+                                  current_reply_bytes_)
+                          .c_str());
+    }
+  }
+
+  GFModuleLogDebug(fmt::format("current version parse done: {}",
+                               version_.current_version_publish_in_remote)
+                       .c_str());
+
+  if (current_reply_ != nullptr) current_reply_->deleteLater();
+  emit SignalUpgradeVersion(version_);
+}
diff --git a/src/ver_check/VersionCheckTask.h b/src/ver_check/VersionCheckTask.h
new file mode 100644
index 0000000..2d42b36
--- /dev/null
+++ b/src/ver_check/VersionCheckTask.h
@@ -0,0 +1,89 @@
+/**
+ * Copyright (C) 2021 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
+ *
+ */
+
+#pragma once
+
+#include <QObject>
+
+#include "SoftwareVersion.h"
+
+class QNetworkReply;
+class QNetworkAccessManager;
+
+/**
+ * @brief
+ *
+ */
+class VersionCheckTask : public QObject {
+  Q_OBJECT
+ public:
+  /**
+   * @brief Construct a new Version Check Thread object
+   *
+   */
+  VersionCheckTask();
+
+  /**
+   * @brief
+   *
+   * @return int
+   */
+  auto Run() -> int;
+
+ signals:
+
+  /**
+   * @brief
+   *
+   * @param version
+   */
+  void SignalUpgradeVersion(SoftwareVersion version);
+
+ private slots:
+
+  /**
+   * @brief
+   *
+   */
+  void slot_parse_latest_version_info();
+
+  /**
+   * @brief
+   *
+   */
+  void slot_parse_current_version_info();
+
+ private:
+  QByteArray latest_reply_bytes_;           ///<
+  QByteArray current_reply_bytes_;          ///<
+  QNetworkReply *latest_reply_ = nullptr;   ///< latest version info reply
+  QNetworkReply *current_reply_ = nullptr;  ///< current version info reply
+  QNetworkAccessManager *network_manager_;  ///<
+  QString current_version_;
+  SoftwareVersion version_;
+};
diff --git a/src/ver_check/VersionCheckingModule.cpp b/src/ver_check/VersionCheckingModule.cpp
new file mode 100644
index 0000000..35d3b82
--- /dev/null
+++ b/src/ver_check/VersionCheckingModule.cpp
@@ -0,0 +1,164 @@
+/**
+ * Copyright (C) 2021 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 "VersionCheckingModule.h"
+
+#include <GFSDKBasic.h>
+#include <GFSDKBuildInfo.h>
+#include <GFSDKExtra.h>
+#include <GFSDKLog.h>
+#include <spdlog/spdlog.h>
+
+#include <QMetaType>
+#include <QtNetwork>
+
+#include "SoftwareVersion.h"
+#include "VersionCheckTask.h"
+
+extern void VersionCheckDone(const SoftwareVersion& version);
+
+auto GFGetModuleGFSDKVersion() -> const char* {
+  return GFModuleStrDup(GF_SDK_VERSION_STR);
+}
+
+auto GFGetModuleQtEnvVersion() -> const char* {
+  return GFModuleStrDup(QT_VERSION_STR);
+}
+
+auto GFGetModuleID() -> const char* {
+  return GFModuleStrDup("com.bktus.gpgfrontend.module.version_checking");
+}
+
+auto GFGetModuleVersion() -> const char* { return GFModuleStrDup("1.0.0"); }
+
+auto GFGetModuleMetaData() -> GFModuleMetaData* {
+  auto* p_meta = static_cast<GFModuleMetaData*>(
+      GFAllocateMemory(sizeof(GFModuleMetaData)));
+  auto* h_meta = p_meta;
+
+  p_meta->key = "Name";
+  p_meta->value = "VersionChecking";
+  p_meta->next = static_cast<GFModuleMetaData*>(
+      GFAllocateMemory(sizeof(GFModuleMetaData)));
+  p_meta = p_meta->next;
+
+  p_meta->key = "Description";
+  p_meta->value = "Try checking gpgfrontend version";
+  p_meta->next = static_cast<GFModuleMetaData*>(
+      GFAllocateMemory(sizeof(GFModuleMetaData)));
+  p_meta = p_meta->next;
+
+  p_meta->key = "Author";
+  p_meta->value = "Saturneric";
+  p_meta->next = nullptr;
+
+  return h_meta;
+}
+
+auto GFRegisterModule() -> int {
+  GFModuleLogInfo("version checking module registering");
+  return 0;
+}
+
+auto GFActiveModule() -> int {
+  GFModuleLogInfo("version checking module activating");
+
+  GFModuleListenEvent(GFGetModuleID(), GFModuleStrDup("APPLICATION_LOADED"));
+  GFModuleListenEvent(GFGetModuleID(),
+                      GFModuleStrDup("CHECK_APPLICATION_VERSION"));
+  return 0;
+}
+
+auto GFExecuteModule(GFModuleEvent* event) -> int {
+  GFModuleLogInfo(
+      fmt::format("version checking module executing, event id: {}", event->id)
+          .c_str());
+
+  auto* task = new VersionCheckTask();
+  QObject::connect(
+      task, &VersionCheckTask::SignalUpgradeVersion, QThread::currentThread(),
+      [event](const SoftwareVersion& version) {
+        VersionCheckDone(version);
+
+        char** event_argv =
+            static_cast<char**>(GFAllocateMemory(sizeof(char**) * 1));
+        event_argv[0] = GFModuleStrDup("0");
+
+        GFModuleTriggerModuleEventCallback(event, GFGetModuleID(), 1,
+                                           event_argv);
+      });
+  QObject::connect(task, &VersionCheckTask::SignalUpgradeVersion, task,
+                   &QObject::deleteLater);
+  task->Run();
+
+  return 0;
+}
+
+auto GFDeactiveModule() -> int { return 0; }
+
+auto GFUnregisterModule() -> int { return 0; }
+
+void VersionCheckDone(const SoftwareVersion& version) {
+  GFModuleLogDebug("filling software information info in rt...");
+
+  GFModuleUpsertRTValue(GFGetModuleID(),
+                        GFModuleStrDup("version.current_version"),
+                        GFModuleStrDup(version.current_version.toUtf8()));
+  GFModuleUpsertRTValue(GFGetModuleID(),
+                        GFModuleStrDup("version.latest_version"),
+                        GFModuleStrDup(version.latest_version.toUtf8()));
+  GFModuleUpsertRTValueBool(
+      GFGetModuleID(), GFModuleStrDup("version.current_version_is_drafted"),
+      version.current_version_is_drafted ? 1 : 0);
+  GFModuleUpsertRTValueBool(
+      GFGetModuleID(),
+      GFModuleStrDup("version.current_version_is_a_prerelease"),
+      version.current_version_is_a_prerelease ? 1 : 0);
+  GFModuleUpsertRTValueBool(
+      GFGetModuleID(),
+      GFModuleStrDup("version.current_version_publish_in_remote"),
+      version.current_version_publish_in_remote ? 1 : 0);
+  GFModuleUpsertRTValueBool(
+      GFGetModuleID(),
+      GFModuleStrDup("version.latest_prerelease_version_from_remote"),
+      version.latest_prerelease_version_from_remote ? 1 : 0);
+  GFModuleUpsertRTValueBool(GFGetModuleID(),
+                            GFModuleStrDup("version.need_upgrade"),
+                            version.NeedUpgrade() ? 1 : 0);
+  GFModuleUpsertRTValueBool(GFGetModuleID(),
+                            GFModuleStrDup("version.current_version_released"),
+                            version.CurrentVersionReleased() ? 1 : 0);
+  GFModuleUpsertRTValueBool(
+      GFGetModuleID(), GFModuleStrDup("version.current_a_withdrawn_version"),
+      version.VersionWithdrawn() ? 1 : 0);
+  GFModuleUpsertRTValueBool(GFGetModuleID(),
+                            GFModuleStrDup("version.loading_done"),
+                            version.loading_done ? 1 : 0);
+
+  GFModuleLogDebug("software information filled in rt");
+}
diff --git a/src/ver_check/VersionCheckingModule.h b/src/ver_check/VersionCheckingModule.h
new file mode 100644
index 0000000..35ee4ac
--- /dev/null
+++ b/src/ver_check/VersionCheckingModule.h
@@ -0,0 +1,56 @@
+/**
+ * Copyright (C) 2021 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
+ *
+ */
+
+#pragma once
+
+#include <GFSDKModule.h>
+
+#include "GFModuleExport.h"
+
+extern "C" {
+
+auto GF_MODULE_EXPORT GFGetModuleGFSDKVersion() -> const char *;
+
+auto GF_MODULE_EXPORT GFGetModuleQtEnvVersion() -> const char *;
+
+auto GF_MODULE_EXPORT GFGetModuleID() -> const char *;
+
+auto GF_MODULE_EXPORT GFGetModuleVersion() -> const char *;
+
+auto GF_MODULE_EXPORT GFGetModuleMetaData() -> GFModuleMetaData *;
+
+auto GF_MODULE_EXPORT GFRegisterModule() -> int;
+
+auto GF_MODULE_EXPORT GFActiveModule() -> int;
+
+auto GF_MODULE_EXPORT GFExecuteModule(GFModuleEvent *) -> int;
+
+auto GF_MODULE_EXPORT GFDeactiveModule() -> int;
+
+auto GF_MODULE_EXPORT GFUnregisterModule() -> int;
+};