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ImHex/main/gui/source/init/tasks.cpp

278 lines
9.5 KiB
C++

#include "init/tasks.hpp"
#include <imgui.h>
#include <romfs/romfs.hpp>
#include <hex/helpers/http_requests.hpp>
#include <hex/helpers/fs.hpp>
#include <hex/helpers/logger.hpp>
#include <hex/helpers/default_paths.hpp>
#include <hex/api/content_registry.hpp>
#include <hex/api/plugin_manager.hpp>
#include <hex/api/achievement_manager.hpp>
#include <hex/ui/view.hpp>
#include <hex/ui/popup.hpp>
#include <nlohmann/json.hpp>
#include <wolv/io/fs.hpp>
#include <wolv/io/file.hpp>
namespace hex::init {
using namespace std::literals::string_literals;
bool setupEnvironment() {
hex::log::debug("Using romfs: '{}'", romfs::name());
return true;
}
static bool isSubPathWritable(std::fs::path path) {
for (u32 i = 0; i < 128; i++) {
if (hex::fs::isPathWritable(path))
return true;
auto parentPath = path.parent_path();
if (parentPath == path)
break;
path = std::move(parentPath);
}
return false;
}
bool createDirectories() {
bool result = true;
// Try to create all default directories
for (auto path : paths::All) {
for (auto &folder : path->all()) {
try {
if (isSubPathWritable(folder.parent_path()))
wolv::io::fs::createDirectories(folder);
} catch (...) {
log::error("Failed to create folder {}!", wolv::util::toUTF8String(folder));
result = false;
}
}
}
if (!result)
ImHexApi::System::impl::addInitArgument("folder-creation-error");
return result;
}
bool prepareExit() {
// Terminate all asynchronous tasks
TaskManager::exit();
// Unlock font atlas, so it can be deleted in case of a crash
if (ImGui::GetCurrentContext() != nullptr) {
if (ImGui::GetIO().Fonts != nullptr) {
ImGui::GetIO().Fonts->Locked = false;
ImGui::GetIO().Fonts = nullptr;
}
}
// Print a nice message if a crash happened while cleaning up resources
// To the person fixing this:
// ALWAYS wrap static heap allocated objects inside libimhex such as std::vector, std::string, std::function, etc. in a AutoReset<T>
// e.g `AutoReset<std::vector<MyStruct>> m_structs;`
//
// The reason this is necessary because each plugin / dynamic library gets its own instance of `std::allocator`
// which will try to free the allocated memory when the object is destroyed. However since the storage is static, this
// will happen only when libimhex is unloaded after main() returns. At this point all plugins have been unloaded already so
// the std::allocator will try to free memory in a heap that does not exist anymore which will cause a crash.
// By wrapping the object in a AutoReset<T>, the `EventImHexClosing` event will automatically handle clearing the object
// while the heap is still valid.
// The heap stays valid right up to the point where `PluginManager::unload()` is called.
EventAbnormalTermination::subscribe([](int) {
log::fatal("A crash happened while cleaning up resources during exit!");
log::fatal("This is most certainly because WerWolv again forgot to mark a heap allocated object as 'AutoReset'.");
log::fatal("Please report this issue on the ImHex GitHub page!");
log::fatal("To the person fixing this, read the comment above this message for more information.");
});
ImHexApi::System::impl::cleanup();
EventImHexClosing::post();
EventManager::clear();
return true;
}
bool loadPlugins() {
// Load all plugins
#if !defined(IMHEX_STATIC_LINK_PLUGINS)
for (const auto &dir : paths::Plugins.read()) {
PluginManager::addLoadPath(dir);
}
PluginManager::loadLibraries();
PluginManager::load();
#endif
// Get loaded plugins
const auto &plugins = PluginManager::getPlugins();
// If no plugins were loaded, ImHex wasn't installed properly. This will trigger an error popup later on
if (plugins.empty()) {
log::error("No plugins found!");
ImHexApi::System::impl::addInitArgument("no-plugins");
return false;
}
const auto shouldLoadPlugin = [executablePath = wolv::io::fs::getExecutablePath()](const Plugin &plugin) {
// In debug builds, ignore all plugins that are not part of the executable directory
#if !defined(DEBUG)
return true;
#endif
if (!executablePath.has_value())
return true;
if (!PluginManager::getPluginLoadPaths().empty())
return true;
// Check if the plugin is somewhere in the same directory tree as the executable
return !std::fs::relative(plugin.getPath(), executablePath->parent_path()).string().starts_with("..");
};
u32 loadErrors = 0;
std::set<std::string> pluginNames;
// Load library plugins first since plugins might depend on them
for (const auto &plugin : plugins) {
if (!plugin.isLibraryPlugin()) continue;
if (!shouldLoadPlugin(plugin)) {
log::debug("Skipping library plugin {}", plugin.getPath().string());
continue;
}
// Initialize the library
if (!plugin.initializePlugin()) {
log::error("Failed to initialize library plugin {}", wolv::util::toUTF8String(plugin.getPath().filename()));
loadErrors++;
}
pluginNames.insert(plugin.getPluginName());
}
// Load all plugins
for (const auto &plugin : plugins) {
if (plugin.isLibraryPlugin()) continue;
if (!shouldLoadPlugin(plugin)) {
log::debug("Skipping plugin {}", plugin.getPath().string());
continue;
}
// Initialize the plugin
if (!plugin.initializePlugin()) {
log::error("Failed to initialize plugin {}", wolv::util::toUTF8String(plugin.getPath().filename()));
loadErrors++;
}
pluginNames.insert(plugin.getPluginName());
}
// If no plugins were loaded successfully, ImHex wasn't installed properly. This will trigger an error popup later on
if (loadErrors == plugins.size()) {
log::error("No plugins loaded successfully!");
ImHexApi::System::impl::addInitArgument("no-plugins");
return false;
}
if (pluginNames.size() != plugins.size()) {
log::error("Duplicate plugins detected!");
ImHexApi::System::impl::addInitArgument("duplicate-plugins");
return false;
}
return true;
}
bool deleteOldFiles() {
bool result = true;
auto keepNewest = [&](u32 count, const paths::impl::DefaultPath &pathType) {
for (const auto &path : pathType.write()) {
try {
std::vector<std::filesystem::directory_entry> files;
for (const auto& file : std::filesystem::directory_iterator(path))
files.push_back(file);
if (files.size() <= count)
return;
std::sort(files.begin(), files.end(), [](const auto& a, const auto& b) {
return std::filesystem::last_write_time(a) > std::filesystem::last_write_time(b);
});
for (auto it = files.begin() + count; it != files.end(); it += 1)
std::filesystem::remove(it->path());
} catch (std::filesystem::filesystem_error &e) {
log::error("Failed to clear old file! {}", e.what());
result = false;
}
}
};
keepNewest(10, paths::Logs);
keepNewest(25, paths::Backups);
return result;
}
bool unloadPlugins() {
PluginManager::unload();
return true;
}
bool loadSettings() {
try {
// Try to load settings from file
ContentRegistry::Settings::impl::load();
} catch (std::exception &e) {
log::error("Failed to load configuration! {}", e.what());
return false;
}
return true;
}
// Run all exit tasks, and print to console
void runExitTasks() {
for (const auto &[name, task, async] : init::getExitTasks()) {
const bool result = task();
log::info("Exit task '{0}' finished {1}", name, result ? "successfully" : "unsuccessfully");
}
}
std::vector<Task> getInitTasks() {
return {
{ "Setting up environment", setupEnvironment, false },
{ "Creating directories", createDirectories, false },
{ "Loading settings", loadSettings, false },
{ "Loading plugins", loadPlugins, false },
};
}
std::vector<Task> getExitTasks() {
return {
{ "Prepare exit", prepareExit, false },
{ "Unloading plugins", unloadPlugins, false },
{ "Deleting old files", deleteOldFiles, false },
};
}
}