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ImHex/plugins/builtin/source/content/providers/file_provider.cpp

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#include "content/providers/file_provider.hpp"
#include "content/providers/memory_file_provider.hpp"
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#include <cstring>
#include <hex/api/localization.hpp>
#include <hex/api/project_file_manager.hpp>
#include <hex/api/achievement_manager.hpp>
#include <hex/api/task.hpp>
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#include <hex/helpers/utils.hpp>
#include <hex/helpers/fmt.hpp>
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#include <wolv/utils/string.hpp>
#include <nlohmann/json.hpp>
#if defined(OS_WINDOWS)
#include <windows.h>
#endif
namespace hex::plugin::builtin {
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bool FileProvider::isAvailable() const {
return true;
}
bool FileProvider::isReadable() const {
return isAvailable() && this->m_readable;
}
bool FileProvider::isWritable() const {
return isAvailable() && this->m_writable;
}
bool FileProvider::isResizable() const {
return isAvailable() && isWritable();
}
bool FileProvider::isSavable() const {
return !this->getPatches().empty();
}
void FileProvider::read(u64 offset, void *buffer, size_t size, bool overlays) {
this->readRaw(offset - this->getBaseAddress(), buffer, size);
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if (overlays) [[likely]] {
for (const auto&[patchOffset, patchData] : getPatches()) {
if (patchOffset >= offset && patchOffset < (offset + size))
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static_cast<u8 *>(buffer)[patchOffset - offset] = patchData;
}
this->applyOverlays(offset, buffer, size);
}
}
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void FileProvider::write(u64 offset, const void *buffer, size_t size) {
if ((offset - this->getBaseAddress()) > (this->getActualSize() - size) || buffer == nullptr || size == 0)
return;
addPatch(offset, buffer, size, true);
}
void FileProvider::readRaw(u64 offset, void *buffer, size_t size) {
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if (offset > (this->getActualSize() - size) || buffer == nullptr || size == 0)
return;
std::memcpy(buffer, this->m_file.getMapping() + offset, size);
}
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void FileProvider::writeRaw(u64 offset, const void *buffer, size_t size) {
if ((offset + size) > this->getActualSize() || buffer == nullptr || size == 0)
return;
std::memcpy(this->m_file.getMapping() + offset, buffer, size);
}
void FileProvider::save() {
this->applyPatches();
#if defined(OS_WINDOWS)
FILETIME ft;
SYSTEMTIME st;
wolv::io::File file(this->m_path, wolv::io::File::Mode::Write);
if (file.isValid()) {
GetSystemTime(&st);
if (SystemTimeToFileTime(&st, &ft)) {
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auto fileHandle = HANDLE(_get_osfhandle(_fileno(file.getHandle())));
SetFileTime(fileHandle, nullptr, nullptr, &ft);
}
}
#endif
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Provider::save();
}
void FileProvider::saveAs(const std::fs::path &path) {
if (path == this->m_path)
this->save();
else
Provider::saveAs(path);
}
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void FileProvider::resize(size_t newSize) {
this->close();
{
wolv::io::File file(this->m_path, wolv::io::File::Mode::Write);
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file.setSize(newSize);
}
(void)this->open();
}
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void FileProvider::insert(u64 offset, size_t size) {
auto oldSize = this->getActualSize();
this->resize(oldSize + size);
std::vector<u8> buffer(0x1000);
const std::vector<u8> zeroBuffer(0x1000);
auto position = oldSize;
while (position > offset) {
const auto readSize = std::min<size_t>(position - offset, buffer.size());
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position -= readSize;
this->readRaw(position, buffer.data(), readSize);
this->writeRaw(position, zeroBuffer.data(), readSize);
this->writeRaw(position + size, buffer.data(), readSize);
}
Provider::insert(offset, size);
}
void FileProvider::remove(u64 offset, size_t size) {
if (offset > this->getActualSize() || size == 0)
return;
if ((offset + size) > this->getActualSize())
size = this->getActualSize() - offset;
auto oldSize = this->getActualSize();
std::vector<u8> buffer(0x1000);
const auto newSize = oldSize - size;
auto position = offset;
while (position < newSize) {
const auto readSize = std::min<size_t>(newSize - position, buffer.size());
this->readRaw(position + size, buffer.data(), readSize);
this->writeRaw(position, buffer.data(), readSize);
position += readSize;
}
this->resize(newSize);
Provider::insert(offset, size);
Provider::remove(offset, size);
}
size_t FileProvider::getActualSize() const {
return this->m_fileSize;
}
std::string FileProvider::getName() const {
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return wolv::util::toUTF8String(this->m_path.filename());
}
std::vector<FileProvider::Description> FileProvider::getDataDescription() const {
std::vector<Description> result;
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result.emplace_back("hex.builtin.provider.file.path"_lang, wolv::util::toUTF8String(this->m_path));
result.emplace_back("hex.builtin.provider.file.size"_lang, hex::toByteString(this->getActualSize()));
if (this->m_fileStats.has_value()) {
std::string creationTime, accessTime, modificationTime;
try { creationTime = hex::format("{:%Y-%m-%d %H:%M:%S}", fmt::localtime(this->m_fileStats->st_ctime)); }
catch (const std::exception&) { creationTime = "???"; }
try { accessTime = hex::format("{:%Y-%m-%d %H:%M:%S}", fmt::localtime(this->m_fileStats->st_atime)); }
catch (const std::exception&) { accessTime = "???"; }
try { modificationTime = hex::format("{:%Y-%m-%d %H:%M:%S}", fmt::localtime(this->m_fileStats->st_mtime)); }
catch (const std::exception&) { modificationTime = "???"; }
result.emplace_back("hex.builtin.provider.file.creation"_lang, creationTime);
result.emplace_back("hex.builtin.provider.file.access"_lang, accessTime);
result.emplace_back("hex.builtin.provider.file.modification"_lang, modificationTime);
}
return result;
}
std::variant<std::string, i128> FileProvider::queryInformation(const std::string &category, const std::string &argument) {
if (category == "file_path")
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return wolv::util::toUTF8String(this->m_path);
else if (category == "file_name")
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return wolv::util::toUTF8String(this->m_path.filename());
else if (category == "file_extension")
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return wolv::util::toUTF8String(this->m_path.extension());
else if (category == "creation_time")
return this->m_fileStats->st_ctime;
else if (category == "access_time")
return this->m_fileStats->st_atime;
else if (category == "modification_time")
return this->m_fileStats->st_mtime;
else if (category == "permissions")
return this->m_fileStats->st_mode & 0777;
else
return Provider::queryInformation(category, argument);
}
bool FileProvider::handleFilePicker() {
return fs::openFileBrowser(fs::DialogMode::Open, {}, [this](const auto &path) {
this->setPath(path);
});
}
std::vector<FileProvider::MenuEntry> FileProvider::getMenuEntries(){
return {
{ "hex.builtin.provider.file.menu.open_folder"_lang, [this] { fs::openFolderWithSelectionExternal(this->m_path); } },
{ "hex.builtin.provider.file.menu.open_file"_lang, [this] { fs::openFileExternal(this->m_path); } },
{ "hex.builtin.provider.file.menu.into_memory"_lang, [this] { this->convertToMemoryFile(); } }
};
}
void FileProvider::setPath(const std::fs::path &path) {
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this->m_path = path;
}
bool FileProvider::open() {
this->m_readable = true;
this->m_writable = true;
if (!std::fs::exists(this->m_path)) {
this->setErrorMessage(hex::format("hex.builtin.provider.file.error.open"_lang, this->m_path.string(), ::strerror(ENOENT)));
return false;
}
wolv::io::File file(this->m_path, wolv::io::File::Mode::Write);
if (!file.isValid()) {
this->m_writable = false;
file = wolv::io::File(this->m_path, wolv::io::File::Mode::Read);
if (!file.isValid()) {
this->m_readable = false;
this->setErrorMessage(hex::format("hex.builtin.provider.file.error.open"_lang, this->m_path.string(), ::strerror(errno)));
return false;
}
}
this->m_fileStats = file.getFileInfo();
this->m_file = std::move(file);
this->m_file.map();
this->m_fileSize = this->m_file.getSize();
this->m_file.close();
return true;
}
void FileProvider::close() {
this->m_file.unmap();
}
void FileProvider::loadSettings(const nlohmann::json &settings) {
Provider::loadSettings(settings);
auto pathString = settings.at("path").get<std::string>();
std::fs::path path = std::u8string(pathString.begin(), pathString.end());
if (auto projectPath = ProjectFile::getPath(); !projectPath.empty()) {
try {
this->setPath(std::fs::weakly_canonical(projectPath.parent_path() / path));
} catch (const std::fs::filesystem_error &) {
try {
this->setPath(projectPath.parent_path() / path);
} catch (const std::fs::filesystem_error &e) {
this->setErrorMessage(hex::format("hex.builtin.provider.file.error.open"_lang, this->m_path.string(), e.what()));
}
}
}
else
this->setPath(path);
}
nlohmann::json FileProvider::storeSettings(nlohmann::json settings) const {
std::string path;
if (auto projectPath = ProjectFile::getPath(); !projectPath.empty())
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path = wolv::util::toUTF8String(std::fs::proximate(this->m_path, projectPath.parent_path()));
if (path.empty())
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path = wolv::util::toUTF8String(this->m_path);
settings["path"] = path;
return Provider::storeSettings(settings);
}
std::pair<Region, bool> FileProvider::getRegionValidity(u64 address) const {
address -= this->getBaseAddress();
if (address < this->getActualSize())
return { Region { this->getBaseAddress() + address, this->getActualSize() - address }, true };
else
return { Region::Invalid(), false };
}
void FileProvider::convertToMemoryFile() {
auto newProvider = hex::ImHexApi::Provider::createProvider("hex.builtin.provider.mem_file", true);
if (auto memoryProvider = dynamic_cast<MemoryFileProvider*>(newProvider); memoryProvider != nullptr) {
if (!memoryProvider->open())
ImHexApi::Provider::remove(newProvider);
else {
const auto size = this->getActualSize();
TaskManager::createTask("Loading into memory", size, [this, size, memoryProvider](Task &task) {
task.setInterruptCallback([memoryProvider]{
ImHexApi::Provider::remove(memoryProvider);
});
constexpr static size_t BufferSize = 0x10000;
std::vector<u8> buffer(BufferSize);
memoryProvider->resize(size);
for (u64 i = 0; i < size; i += BufferSize) {
auto copySize = std::min<size_t>(BufferSize, size - i);
this->read(i, buffer.data(), copySize, true);
memoryProvider->writeRaw(i, buffer.data(), copySize);
task.update(i);
}
memoryProvider->markDirty(true);
ImHexApi::Provider::remove(this, false);
});
}
}
}
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}