372981920e
* dont dlclose nullptrs in plugins this fixes a segmentation fault at startup when dlclose is called with a nullptr * Style fixes Co-authored-by: WerWolv <werwolv98@gmail.com>
97 lines
3.7 KiB
C++
97 lines
3.7 KiB
C++
#include "helpers/plugin_handler.hpp"
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#include <filesystem>
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namespace hex {
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namespace fs = std::filesystem;
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// hex::plugin::<pluginName>::internal::initializePlugin()
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constexpr auto InitializePluginSymbol = "_ZN3hex6plugin%d%s8internal16initializePluginEv";
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constexpr auto GetPluginNameSymbol = "_ZN3hex6plugin%d%s8internal13getPluginNameEv";
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constexpr auto GetPluginAuthorSymbol = "_ZN3hex6plugin%d%s8internal15getPluginAuthorEv";
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constexpr auto GetPluginDescriptionSymbol = "_ZN3hex6plugin%d%s8internal20getPluginDescriptionEv";
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Plugin::Plugin(std::string_view path) {
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this->m_handle = dlopen(path.data(), RTLD_LAZY);
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if (this->m_handle == nullptr)
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return;
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auto pluginName = fs::path(path).stem().string();
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this->m_initializePluginFunction = getPluginFunction<InitializePluginFunc>(pluginName, InitializePluginSymbol);
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this->m_getPluginNameFunction = getPluginFunction<GetPluginNameFunc>(pluginName, GetPluginNameSymbol);
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this->m_getPluginAuthorFunction = getPluginFunction<GetPluginAuthorFunc>(pluginName, GetPluginAuthorSymbol);
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this->m_getPluginDescriptionFunction = getPluginFunction<GetPluginDescriptionFunc>(pluginName, GetPluginDescriptionSymbol);
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}
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Plugin::Plugin(Plugin &&other) noexcept {
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this->m_handle = other.m_handle;
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this->m_initializePluginFunction = other.m_initializePluginFunction;
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this->m_getPluginNameFunction = other.m_getPluginNameFunction;
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this->m_getPluginAuthorFunction = other.m_getPluginAuthorFunction;
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this->m_getPluginDescriptionFunction = other.m_getPluginDescriptionFunction;
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other.m_handle = nullptr;
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other.m_initializePluginFunction = nullptr;
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other.m_getPluginNameFunction = nullptr;
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other.m_getPluginAuthorFunction = nullptr;
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other.m_getPluginDescriptionFunction = nullptr;
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}
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Plugin::~Plugin() {
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if (this->m_handle != nullptr)
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dlclose(this->m_handle);
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}
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void Plugin::initializePlugin() const {
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if (this->m_initializePluginFunction != nullptr)
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this->m_initializePluginFunction();
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}
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std::string Plugin::getPluginName() const {
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if (this->m_getPluginNameFunction != nullptr)
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return this->m_getPluginNameFunction();
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else
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return hex::format("Unknown Plugin @ 0x016llX", this->m_handle);
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}
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std::string Plugin::getPluginAuthor() const {
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if (this->m_getPluginAuthorFunction != nullptr)
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return this->m_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 (this->m_getPluginDescriptionFunction != nullptr)
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return this->m_getPluginDescriptionFunction();
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else
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return "";
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}
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void PluginHandler::load(std::string_view pluginFolder) {
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if (!std::filesystem::exists(pluginFolder))
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throw std::runtime_error("Failed to find plugin folder");
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PluginHandler::s_pluginFolder = pluginFolder;
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for (auto& pluginPath : std::filesystem::directory_iterator(pluginFolder)) {
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if (pluginPath.is_regular_file() && pluginPath.path().extension() == ".hexplug")
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PluginHandler::s_plugins.emplace_back(pluginPath.path().string());
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}
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}
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void PluginHandler::unload() {
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PluginHandler::s_plugins.clear();
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PluginHandler::s_pluginFolder.clear();
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}
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void PluginHandler::reload() {
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PluginHandler::unload();
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PluginHandler::load(PluginHandler::s_pluginFolder);
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}
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}
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