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ImHex/source/views/view_store.cpp

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#include "views/view_store.hpp"
#include <imgui.h>
#define IMGUI_DEFINE_MATH_OPERATORS
#include <imgui_internal.h>
#include <hex/helpers/utils.hpp>
#include <hex/helpers/crypto.hpp>
#include <hex/helpers/logger.hpp>
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#include <hex/helpers/magic.hpp>
#include <fstream>
#include <filesystem>
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#include <functional>
#include <nlohmann/json.hpp>
#include <microtar.h>
#include <hex/helpers/file.hpp>
namespace hex {
using namespace std::literals::string_literals;
using namespace std::literals::chrono_literals;
namespace fs = std::filesystem;
ViewStore::ViewStore() : View("hex.view.store.name") {
this->refresh();
}
ViewStore::~ViewStore() { }
void ViewStore::drawStore() {
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ImGui::Header("hex.view.store.desc"_lang, true);
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if (ImGui::Button("hex.view.store.reload"_lang)) {
this->refresh();
}
auto drawTab = [this](auto title, ImHexPath pathType, auto &content, std::function<void(const StoreEntry&)> downloadDoneCallback) {
if (ImGui::BeginTabItem(title)) {
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if (ImGui::BeginTable("##pattern_language", 3, ImGuiTableFlags_ScrollY | ImGuiTableFlags_Borders | ImGuiTableFlags_SizingStretchSame | ImGuiTableFlags_RowBg)) {
ImGui::TableSetupScrollFreeze(0, 1);
ImGui::TableSetupColumn("hex.view.store.row.name"_lang, ImGuiTableColumnFlags_WidthFixed);
ImGui::TableSetupColumn("hex.view.store.row.description"_lang, ImGuiTableColumnFlags_None);
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ImGui::TableSetupColumn("", ImGuiTableColumnFlags_WidthFixed);
ImGui::TableHeadersRow();
u32 id = 1;
for (auto &entry : content) {
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ImGui::TableNextRow(ImGuiTableRowFlags_None, ImGui::GetTextLineHeight() + 4.0F * ImGui::GetStyle().FramePadding.y);
ImGui::TableNextColumn();
ImGui::TextUnformatted(entry.name.c_str());
ImGui::TableNextColumn();
ImGui::TextUnformatted(entry.description.c_str());
ImGui::TableNextColumn();
ImGui::PushID(id);
ImGui::BeginDisabled(this->m_download.valid() && this->m_download.wait_for(0s) != std::future_status::ready);
{
if (entry.downloading) {
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ImGui::TextSpinner("");
if (this->m_download.valid() && this->m_download.wait_for(0s) == std::future_status::ready) {
entry.downloading = false;
auto response = this->m_download.get();
if (response.code == 200) {
entry.installed = true;
entry.hasUpdate = false;
if (entry.isFolder) {
mtar_t ctx;
mtar_open(&ctx, this->m_downloadPath.string().c_str(), "r");
mtar_header_t header;
auto extractBasePath = this->m_downloadPath.parent_path() / this->m_downloadPath.stem();
while (mtar_read_header(&ctx, &header) != MTAR_ENULLRECORD) {
auto filePath = extractBasePath / fs::path(header.name);
fs::create_directories(filePath.parent_path());
File outputFile(filePath.string(), File::Mode::Create);
std::vector<u8> buffer(0x10000);
for (u64 offset = 0; offset < header.size; offset += buffer.size()) {
auto readSize = std::min<u64>(buffer.size(), header.size - offset);
mtar_read_data(&ctx, buffer.data(), readSize);
buffer.resize(readSize);
outputFile.write(buffer);
}
mtar_next(&ctx);
}
mtar_finalize(&ctx);
mtar_close(&ctx);
}
downloadDoneCallback(entry);
} else
log::error("Download failed!");
this->m_download = { };
}
} else if (entry.hasUpdate) {
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if (ImGui::Button("hex.view.store.update"_lang)) {
this->download(pathType, entry.fileName, entry.link, true);
entry.downloading = true;
}
} else if (!entry.installed) {
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if (ImGui::Button("hex.view.store.download"_lang)) {
this->download(pathType, entry.fileName, entry.link, false);
entry.downloading = true;
}
} else {
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if (ImGui::Button("hex.view.store.remove"_lang)) {
this->remove(pathType, entry.fileName);
entry.installed = false;
}
}
}
ImGui::EndDisabled();
ImGui::PopID();
id++;
}
ImGui::EndTable();
}
ImGui::EndTabItem();
}
};
if (ImGui::BeginTabBar("storeTabs")) {
auto extractTar = []{
};
drawTab("hex.view.store.tab.patterns"_lang, ImHexPath::Patterns, this->m_patterns, [](auto){});
drawTab("hex.view.store.tab.libraries"_lang, ImHexPath::PatternsInclude, this->m_includes, [](auto){});
drawTab("hex.view.store.tab.magics"_lang, ImHexPath::Magic, this->m_magics, [](auto){
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magic::compile();
});
drawTab("hex.view.store.tab.constants"_lang, ImHexPath::Constants, this->m_constants, [](auto){});
drawTab("hex.view.store.tab.yara"_lang, ImHexPath::Yara, this->m_yara, [](auto){});
ImGui::EndTabBar();
}
}
void ViewStore::refresh() {
this->m_patterns.clear();
this->m_includes.clear();
this->m_magics.clear();
this->m_constants.clear();
this->m_yara.clear();
this->m_apiRequest = this->m_net.getString(ImHexApiURL + "/store"s);
}
void ViewStore::parseResponse() {
auto response = this->m_apiRequest.get();
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if (response.code == 200) {
auto json = nlohmann::json::parse(response.body);
auto parseStoreEntries = [](auto storeJson, const std::string &name, ImHexPath pathType, std::vector<StoreEntry> &results) {
// Check if the response handles the type of files
if (storeJson.contains(name)) {
for (auto &entry : storeJson[name]) {
// Check if entry is valid
if (entry.contains("name") && entry.contains("desc") && entry.contains("file") && entry.contains("url") && entry.contains("hash") && entry.contains("folder")) {
// Parse entry
StoreEntry storeEntry = { entry["name"], entry["desc"], entry["file"], entry["url"], entry["hash"], entry["folder"],false, false, false };
// Check if file is installed already or has an update available
for (const auto &folder : hex::getPath(pathType)) {
auto path = folder / fs::path(storeEntry.fileName);
if (fs::exists(path)) {
storeEntry.installed = true;
std::ifstream file(path, std::ios::in | std::ios::binary);
std::vector<u8> data(fs::file_size(path), 0x00);
file.read(reinterpret_cast<char*>(data.data()), data.size());
auto fileHash = crypt::sha256(data);
// Compare installed file hash with hash of repo file
if (std::vector(fileHash.begin(), fileHash.end()) != crypt::decode16(storeEntry.hash))
storeEntry.hasUpdate = true;
}
}
results.push_back(storeEntry);
}
}
}
};
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parseStoreEntries(json, "patterns", ImHexPath::Patterns, this->m_patterns);
parseStoreEntries(json, "includes", ImHexPath::PatternsInclude, this->m_includes);
parseStoreEntries(json, "magic", ImHexPath::Magic, this->m_magics);
parseStoreEntries(json, "constants", ImHexPath::Constants, this->m_constants);
parseStoreEntries(json, "yara", ImHexPath::Yara, this->m_yara);
}
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this->m_apiRequest = { };
}
void ViewStore::drawContent() {
ImGui::SetNextWindowSizeConstraints(ImVec2(600, 400) * SharedData::globalScale, ImVec2(FLT_MAX, FLT_MAX));
if (ImGui::BeginPopupModal(View::toWindowName("hex.view.store.name").c_str(), &this->getWindowOpenState(), ImGuiWindowFlags_AlwaysAutoResize)) {
if (this->m_apiRequest.valid()) {
if (this->m_apiRequest.wait_for(0s) != std::future_status::ready)
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ImGui::TextSpinner("hex.view.store.loading"_lang);
else
this->parseResponse();
}
this->drawStore();
ImGui::EndPopup();
} else {
this->getWindowOpenState() = false;
}
}
void ViewStore::drawMenu() {
if (ImGui::BeginMenu("hex.menu.help"_lang)) {
if (ImGui::MenuItem("hex.view.store.name"_lang)) {
View::doLater([]{ ImGui::OpenPopup(View::toWindowName("hex.view.store.name").c_str()); });
this->getWindowOpenState() = true;
}
ImGui::EndMenu();
}
}
void ViewStore::download(ImHexPath pathType, const std::string &fileName, const std::string &url, bool update) {
if (!update) {
this->m_downloadPath = hex::getPath(pathType).front() / fs::path(fileName);
this->m_download = this->m_net.downloadFile(url, this->m_downloadPath);
} else {
for (const auto &path : hex::getPath(pathType)) {
auto fullPath = path / fs::path(fileName);
if (fs::exists(fullPath)) {
this->m_downloadPath = fullPath;
this->m_download = this->m_net.downloadFile(url, fullPath);
}
}
}
}
void ViewStore::remove(ImHexPath pathType, const std::string &fileName) {
for (const auto &path : hex::getPath(pathType))
fs::remove(path / fs::path(fileName));
}
}