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// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <memory>
#include <string>
#include "common/logging/log.h"
#include "common/string_util.h"
#include "core/file_sys/archive_romfs.h"
#include "core/hle/kernel/process.h"
#include "core/hle/service/fs/archive.h"
#include "core/loader/3dsx.h"
#include "core/loader/elf.h"
#include "core/loader/ncch.h"
////////////////////////////////////////////////////////////////////////////////////////////////////
namespace Loader {
const std::initializer_list<Kernel::AddressMapping> default_address_mappings = {
{ 0x1FF50000, 0x8000, true }, // part of DSP RAM
{ 0x1FF70000, 0x8000, true }, // part of DSP RAM
{ 0x1F000000, 0x600000, false }, // entire VRAM
};
FileType IdentifyFile(FileUtil::IOFile& file) {
FileType type;
#define CHECK_TYPE(loader) \
type = AppLoader_##loader::IdentifyType(file); \
if (FileType::Error != type) \
return type;
CHECK_TYPE(THREEDSX)
CHECK_TYPE(ELF)
CHECK_TYPE(NCCH)
#undef CHECK_TYPE
return FileType::Unknown;
}
FileType IdentifyFile(const std::string& file_name) {
FileUtil::IOFile file(file_name, "rb");
if (!file.IsOpen()) {
LOG_ERROR(Loader, "Failed to load file %s", file_name.c_str());
return FileType::Unknown;
}
return IdentifyFile(file);
}
FileType GuessFromExtension(const std::string& extension_) {
std::string extension = Common::ToLower(extension_);
if (extension == ".elf" || extension == ".axf")
return FileType::ELF;
if (extension == ".cci" || extension == ".3ds")
return FileType::CCI;
if (extension == ".cxi")
return FileType::CXI;
if (extension == ".3dsx")
return FileType::THREEDSX;
return FileType::Unknown;
}
const char* GetFileTypeString(FileType type) {
switch (type) {
case FileType::CCI:
return "NCSD";
case FileType::CXI:
return "NCCH";
case FileType::CIA:
return "CIA";
case FileType::ELF:
return "ELF";
case FileType::THREEDSX:
return "3DSX";
case FileType::Error:
case FileType::Unknown:
break;
}
return "unknown";
}
std::unique_ptr<AppLoader> GetLoader(FileUtil::IOFile&& file, FileType type,
const std::string& filename, const std::string& filepath) {
switch (type) {
// 3DSX file format.
case FileType::THREEDSX:
return std::make_unique<AppLoader_THREEDSX>(std::move(file), filename, filepath);
// Standard ELF file format.
case FileType::ELF:
return std::make_unique<AppLoader_ELF>(std::move(file), filename);
// NCCH/NCSD container formats.
case FileType::CXI:
case FileType::CCI:
return std::make_unique<AppLoader_NCCH>(std::move(file), filepath);
default:
return std::unique_ptr<AppLoader>();
}
}
ResultStatus LoadFile(const std::string& filename) {
FileUtil::IOFile file(filename, "rb");
if (!file.IsOpen()) {
LOG_ERROR(Loader, "Failed to load file %s", filename.c_str());
return ResultStatus::Error;
}
std::string filename_filename, filename_extension;
Common::SplitPath(filename, nullptr, &filename_filename, &filename_extension);
FileType type = IdentifyFile(file);
FileType filename_type = GuessFromExtension(filename_extension);
if (type != filename_type) {
LOG_WARNING(Loader, "File %s has a different type than its extension.", filename.c_str());
if (FileType::Unknown == type)
type = filename_type;
}
LOG_INFO(Loader, "Loading file %s as %s...", filename.c_str(), GetFileTypeString(type));
std::unique_ptr<AppLoader> app_loader = GetLoader(std::move(file), type, filename_filename, filename);
switch (type) {
// 3DSX file format...
// or NCCH/NCSD container formats...
case FileType::THREEDSX:
case FileType::CXI:
case FileType::CCI:
{
// Load application and RomFS
ResultStatus result = app_loader->Load();
if (ResultStatus::Success == result) {
Service::FS::RegisterArchiveType(std::make_unique<FileSys::ArchiveFactory_RomFS>(*app_loader), Service::FS::ArchiveIdCode::RomFS);
return ResultStatus::Success;
}
return result;
}
// Standard ELF file format...
case FileType::ELF:
return app_loader->Load();
// CIA file format...
case FileType::CIA:
return ResultStatus::ErrorNotImplemented;
// Error occurred durring IdentifyFile...
case FileType::Error:
// IdentifyFile could know identify file type...
case FileType::Unknown:
{
LOG_CRITICAL(Loader, "File %s is of unknown type.", filename.c_str());
return ResultStatus::ErrorInvalidFormat;
}
}
return ResultStatus::Error;
}
} // namespace Loader
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