296 lines
13 KiB
C++
296 lines
13 KiB
C++
#include "content/views/view_information.hpp"
|
|
|
|
#include <hex/api/content_registry.hpp>
|
|
|
|
#include <hex/providers/provider.hpp>
|
|
#include <hex/providers/buffered_reader.hpp>
|
|
#include <hex/helpers/fs.hpp>
|
|
#include <hex/helpers/fmt.hpp>
|
|
#include <hex/helpers/literals.hpp>
|
|
|
|
#include <cstring>
|
|
#include <cmath>
|
|
#include <cinttypes>
|
|
#include <filesystem>
|
|
#include <numeric>
|
|
#include <span>
|
|
#include <thread>
|
|
#include <vector>
|
|
|
|
#include <hex/helpers/magic.hpp>
|
|
|
|
#include <implot.h>
|
|
|
|
namespace hex::plugin::builtin {
|
|
|
|
using namespace hex::literals;
|
|
|
|
ViewInformation::ViewInformation() : View("hex.builtin.view.information.name") {
|
|
EventManager::subscribe<EventDataChanged>(this, [this]() {
|
|
this->m_dataValid = false;
|
|
this->m_highestBlockEntropy = 0;
|
|
this->m_blockEntropy.clear();
|
|
this->m_averageEntropy = 0;
|
|
this->m_blockSize = 0;
|
|
this->m_valueCounts.fill(0x00);
|
|
this->m_dataMimeType.clear();
|
|
this->m_dataDescription.clear();
|
|
this->m_analyzedRegion = { 0, 0 };
|
|
});
|
|
|
|
EventManager::subscribe<EventRegionSelected>(this, [this](Region region) {
|
|
if (this->m_blockSize != 0)
|
|
this->m_entropyHandlePosition = region.getStartAddress() / this->m_blockSize;
|
|
});
|
|
|
|
EventManager::subscribe<EventProviderDeleted>(this, [this](const auto*) {
|
|
this->m_dataValid = false;
|
|
});
|
|
|
|
ContentRegistry::FileHandler::add({ ".mgc" }, [](const auto &path) {
|
|
for (const auto &destPath : fs::getDefaultPaths(fs::ImHexPath::Magic)) {
|
|
if (fs::copyFile(path, destPath / path.filename(), std::fs::copy_options::overwrite_existing)) {
|
|
View::showInfoPopup("hex.builtin.view.information.magic_db_added"_lang);
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
});
|
|
}
|
|
|
|
ViewInformation::~ViewInformation() {
|
|
EventManager::unsubscribe<EventDataChanged>(this);
|
|
EventManager::unsubscribe<EventRegionSelected>(this);
|
|
EventManager::unsubscribe<EventProviderDeleted>(this);
|
|
}
|
|
|
|
static float calculateEntropy(std::array<ImU64, 256> &valueCounts, size_t blockSize) {
|
|
float entropy = 0;
|
|
|
|
for (auto count : valueCounts) {
|
|
if (count == 0) continue;
|
|
|
|
float probability = static_cast<float>(count) / blockSize;
|
|
|
|
entropy += probability * std::log2(probability);
|
|
}
|
|
|
|
return (-entropy) / 8; // log2(256) = 8
|
|
}
|
|
|
|
void ViewInformation::analyze() {
|
|
this->m_analyzing = true;
|
|
|
|
std::thread([this] {
|
|
auto provider = ImHexApi::Provider::get();
|
|
|
|
auto task = ImHexApi::Tasks::createTask("hex.builtin.view.information.analyzing", provider->getActualSize());
|
|
|
|
this->m_analyzedRegion = { provider->getBaseAddress(), provider->getBaseAddress() + provider->getSize() };
|
|
|
|
{
|
|
magic::compile();
|
|
|
|
this->m_dataDescription = magic::getDescription(provider);
|
|
this->m_dataMimeType = magic::getMIMEType(provider);
|
|
}
|
|
|
|
this->m_dataValid = true;
|
|
|
|
{
|
|
this->m_blockSize = std::max<u32>(std::ceil(provider->getActualSize() / 2048.0F), 256);
|
|
|
|
std::array<ImU64, 256> blockValueCounts = { 0 };
|
|
|
|
this->m_blockEntropy.clear();
|
|
this->m_valueCounts.fill(0);
|
|
|
|
auto reader = prv::BufferedReader(provider);
|
|
|
|
u64 count = 0;
|
|
for (u8 byte : reader) {
|
|
this->m_valueCounts[byte]++;
|
|
blockValueCounts[byte]++;
|
|
|
|
count++;
|
|
if ((count % this->m_blockSize) == 0) [[unlikely]] {
|
|
this->m_blockEntropy.push_back(calculateEntropy(blockValueCounts, this->m_blockSize));
|
|
blockValueCounts = { 0 };
|
|
task.update(count);
|
|
}
|
|
}
|
|
|
|
this->m_averageEntropy = calculateEntropy(this->m_valueCounts, provider->getSize());
|
|
if (!this->m_blockEntropy.empty())
|
|
this->m_highestBlockEntropy = *std::max_element(this->m_blockEntropy.begin(), this->m_blockEntropy.end());
|
|
else
|
|
this->m_highestBlockEntropy = 0;
|
|
}
|
|
|
|
this->m_analyzing = false;
|
|
}).detach();
|
|
}
|
|
|
|
void ViewInformation::drawContent() {
|
|
if (ImGui::Begin(View::toWindowName("hex.builtin.view.information.name").c_str(), &this->getWindowOpenState(), ImGuiWindowFlags_NoCollapse)) {
|
|
if (ImGui::BeginChild("##scrolling", ImVec2(0, 0), false, ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoNav)) {
|
|
|
|
auto provider = ImHexApi::Provider::get();
|
|
if (ImHexApi::Provider::isValid() && provider->isReadable()) {
|
|
ImGui::BeginDisabled(this->m_analyzing);
|
|
{
|
|
if (ImGui::Button("hex.builtin.view.information.analyze"_lang, ImVec2(ImGui::GetContentRegionAvail().x, 0)))
|
|
this->analyze();
|
|
}
|
|
ImGui::EndDisabled();
|
|
|
|
if (this->m_analyzing) {
|
|
ImGui::TextSpinner("hex.builtin.view.information.analyzing"_lang);
|
|
} else {
|
|
ImGui::NewLine();
|
|
}
|
|
|
|
if (this->m_dataValid) {
|
|
|
|
// Analyzed region
|
|
ImGui::Header("hex.builtin.view.information.region"_lang, true);
|
|
|
|
if (ImGui::BeginTable("information", 2, ImGuiTableFlags_SizingFixedFit | ImGuiTableFlags_RowBg)) {
|
|
ImGui::TableSetupColumn("type");
|
|
ImGui::TableSetupColumn("value", ImGuiTableColumnFlags_WidthStretch);
|
|
|
|
ImGui::TableNextRow();
|
|
|
|
for (auto &[name, value] : provider->getDataInformation()) {
|
|
ImGui::TableNextColumn();
|
|
ImGui::TextFormatted("{}", name);
|
|
ImGui::TableNextColumn();
|
|
ImGui::TextFormattedWrapped("{}", value);
|
|
}
|
|
|
|
ImGui::TableNextColumn();
|
|
ImGui::TextFormatted("{}", "hex.builtin.view.information.region"_lang);
|
|
ImGui::TableNextColumn();
|
|
ImGui::TextFormatted("0x{:X} - 0x{:X}", this->m_analyzedRegion.getStartAddress(), this->m_analyzedRegion.getEndAddress());
|
|
|
|
ImGui::EndTable();
|
|
}
|
|
|
|
ImGui::NewLine();
|
|
|
|
// Magic information
|
|
if (!(this->m_dataDescription.empty() && this->m_dataMimeType.empty())) {
|
|
ImGui::Header("hex.builtin.view.information.magic"_lang);
|
|
|
|
if (ImGui::BeginTable("magic", 2, ImGuiTableFlags_SizingFixedFit | ImGuiTableFlags_RowBg)) {
|
|
ImGui::TableSetupColumn("type");
|
|
ImGui::TableSetupColumn("value", ImGuiTableColumnFlags_WidthStretch);
|
|
|
|
ImGui::TableNextRow();
|
|
|
|
if (!this->m_dataDescription.empty()) {
|
|
ImGui::TableNextColumn();
|
|
ImGui::TextUnformatted("hex.builtin.view.information.description"_lang);
|
|
ImGui::TableNextColumn();
|
|
ImGui::TextFormattedWrapped("{}", this->m_dataDescription.c_str());
|
|
}
|
|
|
|
if (!this->m_dataMimeType.empty()) {
|
|
ImGui::TableNextColumn();
|
|
ImGui::TextUnformatted("hex.builtin.view.information.mime"_lang);
|
|
ImGui::TableNextColumn();
|
|
ImGui::TextFormattedWrapped("{}", this->m_dataMimeType.c_str());
|
|
}
|
|
|
|
ImGui::EndTable();
|
|
}
|
|
}
|
|
|
|
// Information analysis
|
|
{
|
|
|
|
ImGui::Header("hex.builtin.view.information.info_analysis"_lang);
|
|
|
|
ImGui::PushStyleColor(ImGuiCol_FrameBg, ImGui::GetColorU32(ImGuiCol_WindowBg));
|
|
ImPlot::PushStyleColor(ImPlotCol_FrameBg, ImGui::GetColorU32(ImGuiCol_WindowBg));
|
|
|
|
ImGui::TextUnformatted("hex.builtin.view.information.distribution"_lang);
|
|
if (ImPlot::BeginPlot("##distribution", ImVec2(-1, 0), ImPlotFlags_NoChild | ImPlotFlags_NoLegend | ImPlotFlags_NoMenus | ImPlotFlags_NoBoxSelect)) {
|
|
ImPlot::SetupAxes("Address", "Count", ImPlotAxisFlags_Lock, ImPlotAxisFlags_Lock | ImPlotAxisFlags_LogScale);
|
|
ImPlot::SetupAxesLimits(0, 256, 1, double(*std::max_element(this->m_valueCounts.begin(), this->m_valueCounts.end())) * 1.1F, ImGuiCond_Always);
|
|
|
|
static auto x = [] {
|
|
std::array<ImU64, 256> result { 0 };
|
|
std::iota(result.begin(), result.end(), 0);
|
|
return result;
|
|
}();
|
|
|
|
ImPlot::PlotBars<ImU64>("##bytes", x.data(), this->m_valueCounts.data(), x.size(), 1.0);
|
|
|
|
ImPlot::EndPlot();
|
|
}
|
|
|
|
ImGui::NewLine();
|
|
|
|
ImGui::TextUnformatted("hex.builtin.view.information.entropy"_lang);
|
|
|
|
if (ImPlot::BeginPlot("##entropy", ImVec2(-1, 0), ImPlotFlags_NoChild | ImPlotFlags_CanvasOnly)) {
|
|
ImPlot::SetupAxes("Address", "Entropy", ImPlotAxisFlags_Lock, ImPlotAxisFlags_Lock);
|
|
ImPlot::SetupAxesLimits(0, this->m_blockEntropy.size(), -0.1F, 1.1F, ImGuiCond_Always);
|
|
|
|
ImPlot::PlotLine("##entropy_line", this->m_blockEntropy.data(), this->m_blockEntropy.size());
|
|
|
|
if (ImPlot::DragLineX(1, &this->m_entropyHandlePosition, ImGui::GetStyleColorVec4(ImGuiCol_Text))) {
|
|
u64 address = u64(std::max<double>(this->m_entropyHandlePosition, 0) * this->m_blockSize) + provider->getBaseAddress();
|
|
address = std::min(address, provider->getBaseAddress() + provider->getSize() - 1);
|
|
ImHexApi::HexEditor::setSelection(address, 1);
|
|
}
|
|
|
|
ImPlot::EndPlot();
|
|
}
|
|
|
|
ImPlot::PopStyleColor();
|
|
ImGui::PopStyleColor();
|
|
|
|
ImGui::NewLine();
|
|
}
|
|
|
|
// Entropy information
|
|
if (ImGui::BeginTable("entropy", 2, ImGuiTableFlags_SizingFixedFit | ImGuiTableFlags_RowBg)) {
|
|
ImGui::TableSetupColumn("type");
|
|
ImGui::TableSetupColumn("value", ImGuiTableColumnFlags_WidthStretch);
|
|
|
|
ImGui::TableNextRow();
|
|
|
|
ImGui::TableNextColumn();
|
|
ImGui::TextFormatted("{}", "hex.builtin.view.information.block_size"_lang);
|
|
ImGui::TableNextColumn();
|
|
ImGui::TextFormatted("hex.builtin.view.information.block_size.desc"_lang, this->m_blockEntropy.size(), this->m_blockSize);
|
|
|
|
ImGui::TableNextColumn();
|
|
ImGui::TextFormatted("{}", "hex.builtin.view.information.file_entropy"_lang);
|
|
ImGui::TableNextColumn();
|
|
ImGui::TextFormatted("{:.8f}", this->m_averageEntropy);
|
|
|
|
ImGui::TableNextColumn();
|
|
ImGui::TextFormatted("{}", "hex.builtin.view.information.highest_entropy"_lang);
|
|
ImGui::TableNextColumn();
|
|
ImGui::TextFormatted("{:.8f}", this->m_highestBlockEntropy);
|
|
|
|
ImGui::EndTable();
|
|
}
|
|
|
|
if (this->m_averageEntropy > 0.83 && this->m_highestBlockEntropy > 0.9) {
|
|
ImGui::NewLine();
|
|
ImGui::TextFormattedColored(ImVec4(0.92F, 0.25F, 0.2F, 1.0F), "{}", "hex.builtin.view.information.encrypted"_lang);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
ImGui::EndChild();
|
|
}
|
|
ImGui::End();
|
|
}
|
|
|
|
} |