299 lines
10 KiB
C++
299 lines
10 KiB
C++
#include <hex/api/plugin_manager.hpp>
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#include <hex/api/imhex_api.hpp>
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#include <hex/helpers/logger.hpp>
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#include <hex/helpers/fmt.hpp>
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#include <hex/helpers/utils.hpp>
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#include <wolv/utils/string.hpp>
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#include <filesystem>
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#if defined(OS_WINDOWS)
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#include <windows.h>
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#else
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#include <dlfcn.h>
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#endif
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namespace hex {
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Plugin::Plugin(const std::fs::path &path) : m_path(path) {
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log::info("Loading plugin '{}'", wolv::util::toUTF8String(path.filename()));
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#if defined(OS_WINDOWS)
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m_handle = uintptr_t(LoadLibraryW(path.c_str()));
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if (m_handle == uintptr_t(INVALID_HANDLE_VALUE) || m_handle == 0) {
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log::error("Loading plugin '{}' failed: {} {}!", wolv::util::toUTF8String(path.filename()), ::GetLastError(), std::system_category().message(::GetLastError()));
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return;
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}
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#else
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m_handle = uintptr_t(dlopen(wolv::util::toUTF8String(path).c_str(), RTLD_LAZY));
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if (m_handle == 0) {
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log::error("Loading plugin '{}' failed: {}!", wolv::util::toUTF8String(path.filename()), dlerror());
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return;
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}
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#endif
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m_functions.initializePluginFunction = getPluginFunction<PluginFunctions::InitializePluginFunc>("initializePlugin");
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m_functions.initializeLibraryFunction = getPluginFunction<PluginFunctions::InitializePluginFunc>("initializeLibrary");
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m_functions.getPluginNameFunction = getPluginFunction<PluginFunctions::GetPluginNameFunc>("getPluginName");
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m_functions.getPluginAuthorFunction = getPluginFunction<PluginFunctions::GetPluginAuthorFunc>("getPluginAuthor");
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m_functions.getPluginDescriptionFunction = getPluginFunction<PluginFunctions::GetPluginDescriptionFunc>("getPluginDescription");
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m_functions.getCompatibleVersionFunction = getPluginFunction<PluginFunctions::GetCompatibleVersionFunc>("getCompatibleVersion");
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m_functions.setImGuiContextFunction = getPluginFunction<PluginFunctions::SetImGuiContextFunc>("setImGuiContext");
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m_functions.isBuiltinPluginFunction = getPluginFunction<PluginFunctions::IsBuiltinPluginFunc>("isBuiltinPlugin");
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m_functions.getSubCommandsFunction = getPluginFunction<PluginFunctions::GetSubCommandsFunc>("getSubCommands");
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m_functions.getFeaturesFunction = getPluginFunction<PluginFunctions::GetSubCommandsFunc>("getFeatures");
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}
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Plugin::Plugin(const hex::PluginFunctions &functions) {
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m_handle = 0;
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m_functions = functions;
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}
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Plugin::Plugin(Plugin &&other) noexcept {
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m_handle = other.m_handle;
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other.m_handle = 0;
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m_path = std::move(other.m_path);
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m_functions = other.m_functions;
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other.m_functions = {};
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}
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Plugin& Plugin::operator=(Plugin &&other) noexcept {
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m_handle = other.m_handle;
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other.m_handle = 0;
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m_path = std::move(other.m_path);
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m_functions = other.m_functions;
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other.m_functions = {};
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return *this;
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}
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Plugin::~Plugin() {
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#if defined(OS_WINDOWS)
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if (m_handle != 0)
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if (FreeLibrary(HMODULE(m_handle)) == FALSE) {
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log::error("Error when unloading plugin '{}': {}!", wolv::util::toUTF8String(m_path.filename()), std::system_category().message(::GetLastError()));
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}
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#else
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if (m_handle != 0)
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dlclose(reinterpret_cast<void*>(m_handle));
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#endif
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}
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bool Plugin::initializePlugin() const {
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const auto pluginName = wolv::util::toUTF8String(m_path.filename());
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if (this->isLibraryPlugin()) {
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m_initialized = true;
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return true;
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}
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const auto requestedVersion = getCompatibleVersion();
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if (requestedVersion != ImHexApi::System::getImHexVersion()) {
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if (requestedVersion.empty()) {
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log::warn("Plugin '{}' did not specify a compatible version, assuming it is compatible with the current version of ImHex.", wolv::util::toUTF8String(m_path.filename()));
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} else {
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log::error("Refused to load plugin '{}' which was built for a different version of ImHex: '{}'", wolv::util::toUTF8String(m_path.filename()), requestedVersion);
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return false;
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}
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}
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if (m_functions.initializePluginFunction != nullptr) {
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try {
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m_functions.initializePluginFunction();
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} catch (const std::exception &e) {
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log::error("Plugin '{}' threw an exception on init: {}", pluginName, e.what());
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return false;
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} catch (...) {
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log::error("Plugin '{}' threw an exception on init", pluginName);
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return false;
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}
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} else {
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log::error("Plugin '{}' does not have a proper entrypoint", pluginName);
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return false;
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}
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log::info("Plugin '{}' initialized successfully", pluginName);
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m_initialized = true;
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return true;
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}
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std::string Plugin::getPluginName() const {
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if (m_functions.getPluginNameFunction != nullptr) {
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return m_functions.getPluginNameFunction();
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} else {
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if (this->isLibraryPlugin())
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return "Library Plugin";
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else
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return hex::format("Unknown Plugin @ 0x{0:016X}", m_handle);
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}
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}
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std::string Plugin::getPluginAuthor() const {
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if (m_functions.getPluginAuthorFunction != nullptr)
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return m_functions.getPluginAuthorFunction();
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else
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return "Unknown";
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}
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std::string Plugin::getPluginDescription() const {
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if (m_functions.getPluginDescriptionFunction != nullptr)
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return m_functions.getPluginDescriptionFunction();
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else
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return "";
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}
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std::string Plugin::getCompatibleVersion() const {
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if (m_functions.getCompatibleVersionFunction != nullptr)
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return m_functions.getCompatibleVersionFunction();
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else
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return "";
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}
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void Plugin::setImGuiContext(ImGuiContext *ctx) const {
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if (m_functions.setImGuiContextFunction != nullptr)
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m_functions.setImGuiContextFunction(ctx);
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}
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[[nodiscard]] bool Plugin::isBuiltinPlugin() const {
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if (m_functions.isBuiltinPluginFunction != nullptr)
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return m_functions.isBuiltinPluginFunction();
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else
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return false;
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}
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const std::fs::path &Plugin::getPath() const {
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return m_path;
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}
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bool Plugin::isValid() const {
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return m_handle != 0 || m_functions.initializeLibraryFunction != nullptr || m_functions.initializePluginFunction != nullptr;
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}
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bool Plugin::isLoaded() const {
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return m_initialized;
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}
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std::span<SubCommand> Plugin::getSubCommands() const {
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if (m_functions.getSubCommandsFunction != nullptr) {
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auto result = m_functions.getSubCommandsFunction();
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return *static_cast<std::vector<SubCommand>*>(result);
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} else {
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return { };
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}
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}
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std::span<Feature> Plugin::getFeatures() const {
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if (m_functions.getFeaturesFunction != nullptr) {
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auto result = m_functions.getFeaturesFunction();
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return *static_cast<std::vector<Feature>*>(result);
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} else {
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return { };
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}
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}
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bool Plugin::isLibraryPlugin() const {
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return m_functions.initializeLibraryFunction != nullptr &&
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m_functions.initializePluginFunction == nullptr;
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}
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void *Plugin::getPluginFunction(const std::string &symbol) const {
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#if defined(OS_WINDOWS)
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return reinterpret_cast<void *>(GetProcAddress(HMODULE(m_handle), symbol.c_str()));
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#else
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return dlsym(reinterpret_cast<void*>(m_handle), symbol.c_str());
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#endif
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}
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bool PluginManager::load(const std::fs::path &pluginFolder) {
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if (!wolv::io::fs::exists(pluginFolder))
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return false;
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getPluginPaths().push_back(pluginFolder);
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// Load library plugins first
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for (auto &pluginPath : std::fs::directory_iterator(pluginFolder)) {
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if (pluginPath.is_regular_file() && pluginPath.path().extension() == ".hexpluglib") {
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if (!isPluginLoaded(pluginPath.path())) {
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getPlugins().emplace_back(pluginPath.path());
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}
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}
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}
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// Load regular plugins afterwards
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for (auto &pluginPath : std::fs::directory_iterator(pluginFolder)) {
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if (pluginPath.is_regular_file() && pluginPath.path().extension() == ".hexplug") {
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if (!isPluginLoaded(pluginPath.path())) {
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getPlugins().emplace_back(pluginPath.path());
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}
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}
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}
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std::erase_if(getPlugins(), [](const Plugin &plugin) {
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return !plugin.isValid();
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});
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if (getPlugins().empty())
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return false;
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return true;
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}
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void PluginManager::unload() {
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getPluginPaths().clear();
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// Unload plugins in reverse order
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auto &plugins = getPlugins();
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const auto pluginCount = plugins.size();
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for (size_t i = 0; i < pluginCount; i++) {
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plugins.pop_back();
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}
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}
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void PluginManager::reload() {
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auto paths = getPluginPaths();
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PluginManager::unload();
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for (const auto &path : paths)
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PluginManager::load(path);
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}
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void PluginManager::addPlugin(hex::PluginFunctions functions) {
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getPlugins().emplace_back(functions);
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}
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std::vector<Plugin> &PluginManager::getPlugins() {
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static std::vector<Plugin> plugins;
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return plugins;
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}
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std::vector<std::fs::path> &PluginManager::getPluginPaths() {
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static std::vector<std::fs::path> pluginPaths;
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return pluginPaths;
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}
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bool PluginManager::isPluginLoaded(const std::fs::path &path) {
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return std::ranges::any_of(getPlugins(), [&path](const Plugin &plugin) {
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return plugin.getPath().filename() == path.filename();
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});
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}
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}
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